Links to supplies that you might not have on hand:

Laser Pointer

Any laser pointer will work.

Laser pointer with a power switch (instead of a button that has to be held down) and usb charging:

https://www.amazon.com/Flashlight-Adjustable-Patterns-Interactive-Rechargeable/dp/B09NN72LKF/ref=sr_1_57

The link below has three different colors of lasers and uses AAA batteries. You can tape the buttons down to keep the laser on.

https://www.amazon.com/IVVTRYI-3-Pack-Laser-Pointer-presentations/dp/B0FXF9P1VB/ref=sr_1_1_sspa

Petri Dishes (including some fancy options)

We'll show you how to make your own with gelatin and beef boulion, but (spoiler alert!) homemade plates that are made in a kitchen will all be contaminated to some degree. You can also order pre-poured sterile plates from a variety of sources. We've included a few (non-affiliate) links for convenience:

Pre-poured plates ($14)

amazon.com/Tryptic-General-Microorganisms-Hardy-Diagnostics/dp/B0017U26S6/ref=sr_1_13?crid=16SSHBZ0SPOGN

Pre-poured agar plates with a science book ($22)

amazon.com/EZ-BioResearch-Bacteria-Science-Book/dp/B004MKHNJK

From Midnight Mushroom Co (free shipping on orders over $25) there are plates for $2 each with different colors available:

midnightmushroomco.com/products/sterile-agar-plate

If you have any questions about either of these projects, don't hesitate to email us!

-Science Mom & Math Dad