DIY Glowing Lab Rat Jars

1 min read September 13, 2026 Michelle Stewart
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Crank up the creepy factor at your next Mad Scientist Halloween Party with these oozing DIY Glowing Lab Rat Jars. These are also a great addition to your Halloween prop and decoration stash!

Project Time
20 to 30 min
Difficulty
Intermediate
Step
1

Start by applying hot glue to the tail of one of the plastic rats.

DIY Glowing Lab Rat Jars step 1
Step
2

Attach the tail to the underside of another rat to connect them. Repeat until you have three rats connected.

DIY Glowing Lab Rat Jars step 2 part 1
DIY Glowing Lab Rat Jars step 2 part 2
Step
3

Hot glue the tail of the first rat to the underside of the mason jar lid.

DIY Glowing Lab Rat Jars step 3
Step
4

Pour glowing water into the jar and secure the lid. (You can find out how to make glowing water in my tutorial for Glowing Laboratory Specimens HERE.)

DIY Glowing Lab Rat Jars step 4 part 1
DIY Glowing Lab Rat Jars step 4 part 2
Step
5

Take the Glow in the Dark Slime and apply it to the outside of the jar. This will make it look as if the jar's contents are oozing out.

DIY Glowing Lab Rat Jars step 5 part 1
DIY Glowing Lab Rat Jars step 5 part 2
DIY Glowing Lab Rat Jars step 5 part 3
Step
6

Turn on your black lights and watch the jars glow! Check out the entire Mad Scientist Partyas well as the DIY Glowing Laboratory Specimens, and my recipe for Toxic Halloween Punch!

DIY Glowing Lab Rat Jars step 6

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