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The Mad Science Party Lab – 8 Tips for Explosive Fun!

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Mad Science Birthday Party Ideas - 8+ Tips

I’m excited to share some fun tips and ideas from my daughter’s Mad Science Birthday party with you… finally! She’s 8-1/2 now, and this is her 7th birthday party. 😳😂 I obviously need to get speedier on my timing here… but according to our honorary star of this party – Albert Einstein – time is relative and flexible, so let’s just ride that wave for now! ;)

Anyways, aside from abundance of “experiment messes” around the house, I really love that Macy has been crazy about science for a few years now. This was a super enjoyable party theme to work on with TONS of room for creativity – especially in the treats department! There were so many possibilities to explore with this theme, but here are some of my favorites from our own party that were fun, creative, and yes – totally DOABLE. Hooray! Here we go….


science party baking soda balloons

1. Hands-on Experiments

Set up stations with simple experiments that kids can try themselves, like baking soda & vinegar balloons.

We saved small Gatorade bottles for this activity and pre-filled them with vinegar. The balloons were also pre-filled with baking soda, so kids could just grab a balloon and put it on a bottle, then watch the balloon *magically* inflate. Using balloons with design on them – like these polka dot and marbled balloons – makes this activity even more fun to look at!

science party activity ideas

Candy molecule building is another super easy activity that doesn’t make a huge mess. 🙌 Set out trays of “squishy” candy (like spice dots, marshmallows, etc) + toothpicks and let kids build their own candy molecules! It’s a good idea to set out a some pre-built models for them to copy, and there are lots of great examples available if you do a goole image search for “candy molecules”.

mad scientist decoration - door sign

2. The Mad Scientist

From crazy hair to a giant mustache, bring in signature “mad scientist” details for a touch of zany flair. I loved the idea of greeting guests at the door with a giant, playful nod to our mad scientist! We also had colorful “safety glasses” for all of the guests to wear.

science party dessert table ideas

3. Laboratory Treats

This is where things can REALLY get creative! We served up science-inspired treats like “Petri Dish Jello”, gummy frog “Specimens”
white chocolate “Lab Rats” (made using this candy mouse mold), and rock candy stick “Geodes”.

I especially love how the petri dish jello dessert turned out:

petri dish jello science party treat

This scientific and gross-in-a-good-way treat is easy to make! Just pour liquid jello into petri dishes (about half way full). If you’re using gummy worms or other big gummies, you can then add them in now. Refrigerate for about an hour, then add some sprinkles and continue to refrigerate until serving. The sprinkles will kind of bloat and “bleed” out into the jello after a while, resembling “bacteria” that’s growing! I also added a strip of washi tape to “package” the treat.

mad science party printables

4. Printable Fun

Printables are my favorite quick & easy way to play up any theme! I designed a bright and colorful science inspired collection for this party featuring playful (and yes, maybe a little bit nerdy 🤓) science puns like “Of QUARTZ, Geology ROCKS” and “DISCOVER something fun”!

science party printables and rock candy sticks

These will be available in a new section of the my site coming soon, but if you’re interested in them in the meantime, shoot me an email or leave a comment below. Tx!

science party light bulb decor and favors

5. Bright Ideas

Fill plastic light bulb containers with colorful candy for a favor with creative spark! We used a mix of regular and pastel M&Ms to fill these guys, and since I’m totally a stickler about colors, yes… we DID pick out all the pieces that didn’t match the party’s palette. Looking at you brown and orange! ;) It was a lot less expensive to do it this way using “regular” bags of M&Ms than to buy the specialty packs that are all one color.

science party light bulb favors

DIY Molecule and Atom party decorations

6. Giant Atoms and Molecules (DIY Decor)

This was probably my favorite decoration – possibly because I just love anything that you can hang overhead! These giant “atom & molecule” decorations are made from embroidery hoops (spray painted silver), colorful “ball pit” balls, and wooden skewers. I used fishing wire to hang them for a “floating” effect.

Mad Science Sacramento Party Entertainers

7. Mad Science Show

Live demos are always a hit with the kids! We hired a pro from Mad Science of Sacramento to put on a cool science show that was centered around gases, chemical reactions, and “things that go pop and fizz”. She also led the kids in a bouncy ball making activity and explained the science behind cotton candy making… while making it. And then of course the kids scarfed it down!

kids eating pink cotton candy

easy science party decorations

8. “Experimental” Decor

These science-inspired decoration ideas are quick, stylish, and won’t break the bank!

  • Colorful Chemistry
    This is as easy as it gets! Just fill glass beakers with water and food coloring. We also dropped dry ice into them a few times – especially when guests were first arriving. However, just a heads up that the dry ice doesn’t last very long with the small pieces that you have to use in order for them to fit inside the narrow mouth beakers.
  • Petri Dish Specimens
    For these, I printed scientific looking patterns out on transparency paper and cut them to fit inside large petri dishes. A plastic insect or butterfly was placed on top, then covered with the petri dish lid. Done!
  • Biohazard Caution Tape
    This bright yellow tape is a great way to make a big impact on your space without spending much at all. Doors, fences, etc… it makes an easy photo backdrop too!
  • Test Tube Insects
    To make these, just stick plastic bugs and butterflies into clear test tube containers (I used these large plastic ones) and fill them with water. It’s actually best when the fit is a little snug, because the insects get suspended in the tube, making things look all the more “science-y”.

science party bug specimen decorations


Hope some of these ideas help you plan your own Mad Science Party! If you have questions anything I didn’t cover here, feel free to leave me a comment below. Happy celebrating!

science party activity ideas

By |2018-11-08T13:50:41-07:00November 8th, 2018|Parties for Boys, Parties for Girls, Styled by Jenn|

About the Author:

Jennifer Sbranti is the founder of Hostess with the Mostess®, a creative living and party planning resource established in 2006. She lives in Northern California with her husband, Sonny, and daughters Macy (9) and Rylie (7). Sbranti’s work has been featured in media outlets such as Good Morning America, The Today Show, Real Simple, People, InStyle Weddings, and Extra! TV. She has designed creative content and unique live events for several well-respected brands, including Mattel, Coca-Cola, The Hershey Company, Toys”R”Us, Pottery Barn Kids, and Starbucks.


  1. Priyanka Sharma November 26, 2018 at 3:45 am - Reply


    I came across your blog while looking up science themed parties. My son is absolutely thrilled to have a science themed party and I am in love with your design. I am taking the liberty to reach out and request you to Kindly share the details of how can I get the design. I would be much obliged and grateful.

    Priyanka Sharma : [email protected]mail.com
    From : India
    Mommy to a super thrilled boy looking forward to his birthday!

  2. Thezam December 3, 2018 at 3:39 pm - Reply

    Hello! This is so so so good! I’m in love. I’ve been following you for years now and you inspired me so much. I would love to have these printables. Thank you so much for sharing your creativity.

  3. Jason N Cunard December 5, 2018 at 9:36 am - Reply

    You can rent a cotton candy machine from us if you’re in the Jacksonville FL area! Find us at https://www.bounceitoutparty.com/jacksonville-fl/

  4. Judith Moore January 12, 2019 at 2:09 am - Reply

    Hi there,
    I’m hosting a birthday party at home for the first time and I’ve decided to do little science ecperiments with my son’s 6 year-old friends. I would be so grateful if you could share your fabulous printables with me.
    Judith xx

  5. Chris January 30, 2019 at 4:03 am - Reply

    What an amazing article. I really loved the insects in test tubes. I was a total science nerd at high school so I really need to do this for my son’s 9th birthday. It is not really for this age group but I also came across a science party game for adults. It was called Chemical Catastrophe and I found it at Chemical Catastrophe Murder Mystery Party.

    Do you think I could get the test tubes on eBay? Thanks so much.

  6. G L February 7, 2019 at 8:21 pm - Reply

    Pucker powder is good to eat and can make a good science project to see what color make different colors.
    This also has different flavors too

  7. Lisa February 15, 2019 at 8:31 pm - Reply

    Would you kindly share the printables? I am planning a science party for my son.

    • jenn s. February 17, 2019 at 4:04 pm - Reply

      Hi Lisa! Just sent them to you via email. :)

  8. Donna W February 22, 2019 at 11:05 am - Reply

    Hi Jenn

    You did a phenomenal job. Love your printables. Would you please also send me the link?

    Many thanks

  9. Heather Powell March 1, 2019 at 4:26 am - Reply

    I love these ideas and want to use them for an upcoming party. Do you have a template for the mad scientist on your front door?
    Thank you! Heather

  10. Erin March 1, 2019 at 7:35 pm - Reply

    Your party looks fantastic and like so much fun! I would love to know how I can get your printables. Please and thank you!!

  11. Shubha March 8, 2019 at 7:15 pm - Reply


    Thanks for this amazing post with ideas and explaination.i am planning a mad science party for my son… was wo dering of u can share the peintables with me??

    Thank u

  12. Raelene March 25, 2019 at 12:30 am - Reply

    This party looks so great! Would you share the printables with me? Many thanks!

  13. Laticha Lovato April 17, 2019 at 7:31 pm - Reply

    Love your work and I would likr to inquire about your printable party as well!! Can you please share more info???

  14. Ginger April 18, 2019 at 1:55 am - Reply

    Hey there! I love your party! Could you share the printables with me? THanks!!

  15. Veronica April 18, 2019 at 7:44 pm - Reply

    This was an amazing job I am planning my sisters Science themed baby shower and would love information on the printables. Would you mind sharing the details with me. [email protected]

  16. Kaki April 21, 2019 at 10:01 pm - Reply


    Thank you for sharing these cute ideas! I love them and feel inspired for my daughter’s 7th birthday. Would you mind sharing the printable with me? I love the door decorations as well as some of the displays?

    Thank you!


  17. Kimberley April 26, 2019 at 3:03 pm - Reply

    Hello! This is such a great theme and you’ve done a wonderful job! Are you please able to share the template for the door decoration if you have it? Also do you have a link or know where I can purchase the little sign holder things? Sorry I don’t know what they’re called! I’m planning a science party for my almost 6 year old thank you, Kimberley

  18. Nanette Berezhnyy May 1, 2019 at 1:10 pm - Reply

    Would you share the template for the door and the printables.

  19. Rachel May 5, 2019 at 9:21 am - Reply

    I love this theme. I am thinking of doing a Mad Scientist party for my End of Year party with my second graders. Would you be willing to share the printables with me please! [email protected]
    Thank you!

  20. Gator Jump Kansas City May 21, 2019 at 5:05 pm - Reply

    Such a cute idea! This is the perfect party theme for my 6 year old daughters upcoming birthday party, such a fresh idea! Thanks so much for sharing! :)

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