DIY Mad Scientist Costume and Scientist Badge Free Printable

My oldest son is all about DIY Halloween costumes and this year he decided to be a Mad Scientist!  We had most of the supplies needed to put together this awesome DIY Mad Scientist Costume.  The Mad Scientist Costume is a really easy costume to put together last minute too.  

DIY Mad Scientist Costume and Scientist Badge Free Printable

The only things I purchased was a lab coat found at the thrift store for $0.50, fake mustache and some plastic test tubes on Amazon for $5.  

DIY Mad Scientist Costume – What you need:

  • slacks/pants
  • button up dress shirt
  • bow tie
  • safety goggles
  • lab coat
  • hair gel for crazy hairdo
  • scientist badge (free printable below)
  • badge holder and clip
  • glasses (optional)
  • fake mustache (optional)
  • charcoal dust (optional)
  • test tubes or beakers (optional)

DIY Mad Scientist Costume and Scientist Badge Free Printable

How we put our DIY Mad Scientist Costume together: 

My son already had black slacks and a grey button up shirt. Little brother owned a bow tie that fit him.  He already owned fake glasses but if you don’t I suggest getting some 3-d glasses and removing their lenses.  I usually keep our 3-D glasses when we go to the movies.  Safety goggles came from grandpa’s work shop.  The lab coat size small was found at thrift store.  If you can’t find a lab coat at your thrift store you can make one from an adult white button up shirt.    Fake mustache was found at the grocery store and plastic test tubes from Amazon.  

I filled the test tubes with colored water.  We opted for an explosion went off look and used our activated charcoal capsules; I opened the capsules and smudged it all over his face.  You could use black face paint instead but the the charcoal dust looks more authentic, in my opinion.  

DIY Mad Scientist Costume and Scientist Badge Free Printable

Free Printable Scientist Badge:

I designed an official looking Scientist badge with help from my son.  I printed, cut out and taped it to an old work badge (you can find badge holders & clips at most stores or Amazon).  We loved the way the badge turned out!  I am sharing this badge with you too!  

Some options for the badge is print a picture of your child to put over the fingerprint.  Also, you can either write in your child’s name or use an editing program to type in their name.  To type you will need to save the file and open it in an editing program. PicMonkey is a great option, it’s a free online editing program and is really easy to use!  Just open blank sign file and add your text to the badge. 

This badge would be great for your DIY Mad Scientist costume for Halloween, dress-up play or for a Scientist Themed party.  I think these badges would make a great party favor!  I have shared a printable with 1 badge on the page and a printable with 9 badges on the page (for parties).

DIY Mad Scientist Costume and Scientist Badge Free Printable

Click Here for Free Printable of 1 Scientist Badge

Click Here for Free Printable of 9 Scientist Badges


If you would like another Level, I have shared Level 5 – Level 10. Click HERE to go to post.

All printables and downloads designed by rays of bliss are for PERSONAL USE ONLY. Please do not alter or claim as your own. This file is not intended for resale, nor are the printed versions of this file. Feel free to link back to if you like our printables.


  1. Granmama15 says:


  2. Amber Ludwig says:

    So fun!! I love that the printable name badges really make it!! My son and I will have to have a “mad science” day πŸ™‚

  3. Your page totally saved my sons birthday party! Thank you so much for sharing these brilliant Ideas!!

  4. Thanks! My daughter had to dress up at school like a mad scientist and this was perfect!

  5. says:

    thank you

  6. Thank you!
    Printed one for my daughter for career day at school!

  7. thanks a lot for your work! super cool πŸ™‚

  8. ilana Masri says:

    Love these..I just bought a case of badge holders, but they are horizontal. I hope this doesn’t sound totally annoying, but is there any way you can post these badges horizontally?

  9. Katie Hopkins says:

    Thank you so much for sharing your printables. It’s not always easy to find a free one and these are really great! My daughter will be thrilled to use them for her party. Have a great day!

  10. Thank you so much for sharing! Can’t wait to use them.

  11. Hi
    Trying to download these printable scientist badges for use for a dress up, but getting an error message when I print on the links. Are you able to check if the links are working?

    • Everything should be working now. Made some changes on hosting and files did not move correctly. Thanks for letting me know about the issue.

  12. Is there a way to change the level of clearance to 10 to match my son’s age?

  13. Is there a way to make it print bigger and for me to be able to add my sons name? I tried to save it so i can make it slightly bigger but i am not able to. It looks a lot smaller when I printed it then it does in your post. Thank you πŸ™‚

  14. Love this “Scientist” Badge! I’m an elementary teacher so I’m making up these badges for my set-up & clean-up volunteers to wear on Halloween. My class voted on a “Mad Scientist Lab” theme for the classroom decorations, so these are a perfect fit. The school gives us small stickers with their photos that will be so fun to add! I think they’ll love it! Thanks for sharing!

  15. Thank you so much for making these! This is the 2nd year I have printed one out. Last year we went with the Mad Scientist costume and this year my son wants to be a rocket scientist. Thanks again!

  16. Emily Nelson says:

    I love this! So cute! I can’t seem to open the badge in picmonkey to edit it and add my son’s name. Is there a jpeg version you could email me?

  17. Thank you using this for my son, he has a science themed week at school with fancy dress! Perfect!!!

  18. My daughter is having a science party on Saturday. I bought badge covers and lanyards but the badges are landscape not portrait. Is there a way you could edit it for me and send it so I can add the kids names? I’d really appreciate it! I am running out of time and this is the last thing I need to do! Thanks again.

    • Oh and Level 7 clearance =)

    • Hello Emily, sorry I cannot convert this to landscape easily. Unfortunately after a computer switch I lost some files, so I do not have the original file to edit this. Perhaps, you can find a printable on Etsy. Hope your daughter has a wonderful party.

  19. thank you so much for sharing these. they are awesome!

  20. Thank you so much for sharing your amazing design! The badges look wonderful and I know the kids will love them! I’m so glad my son picked a mad science party for his 8th birthday.

  21. Thank you for sharing this design! I am using with a group of young scientists learning the basics of forensic science. We are going to put photos on the reverse side and laminate the badge. πŸ™‚

  22. Kate Foucek says:

    I love this! I have a scientist of the week in my classroom and would love to personalize these badges for each student. Any hints on how to edit each one with a different one? I tried PicMonkey and it wouldn’t work.

  23. Thank you. My son and his friends will love their badges. We’re having a science party this weekend.

  24. These badges are amazing – I noticed you were able to make small changes and send people the file – is it possible to change the clearance level to 6 for my sons age – he is in love with these badges for his upcoming party!!!!

  25. thanks this helps

  26. Any chance you would have a Level 7 file already created? I would love that for my sons upcoming party too. And I noticed someone above had already asked you- but I didn’t see a file posted. Do you have one by chance? Thx!

  27. Thank you so much for sharing the file! I was super excited to find it at 2 am last night while throwing together a last minute scientist outfit for my daughter to wear to school. She loved it!

    I used Adobe Reader to add her name. Just click “comment” in the toolbar and “T” to add text. Easy!

  28. Kellie Hency says:

    These are absolutely perfect for my little scientist’s birthday party. Great job thank you. Are you still available to change these up? If so it would be cool to follow another lady and use my sons age for the clearance.

  29. belinda lopez aviles says:

    thank you so much, you save my day and put a big smile on my fifth graders

  30. These cool mad scientist name badges are PERFECT for my preschool class for Mad Science week! Thank you for making them a FREE printable! Us preschool teachers appreciate it because we’re always broke. Low pay!

  31. Ann-Marie says:

    Loved all your ideas for this party!! Loved the badges! Would you be able to do a level 4 with the fingerprint square blank? Was thinking it might be fun for the kids to do their own fingerprint.

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