Introduction: D.I.Y Volcano Slimes

In this instruction set you are going to learn how to make 2 different types of slime to put into your own paper mâchè volcano!

Step 1: Reuable Slime Materials

  • School glue (Elmer’s is fine)
  • Saline solution/ eye drops *(Ingredients must contain either Boric Acid or Sodium Borate)*
  • Fluorescent paint (preferably yellow or pink)
  • Baking soda
  • Measuring cups
  • Spoon
  • Large Bowl
  • Balloon
  • Small soda bottle
  • Duct Tape or masking tape
  • Scissors or exacto knife* (Adult supervision is required)

Step 2: Mixing

  • Pour all contents of school glue into a large bowl
  • Add ½ teaspoon of baking soda then mix
  • Add ¼ teaspoon of fluorescent paint then mix (quantity may vary)
  • Add 1 tablespoon of saline solution then mix (quantity will vary)

Step 3: Kneading

  • You will know that the slime is ready to be kneaded once it forms together and starts to be sticky
  • After it is sticky, take the slime out of the bowl and start kneading it (like you would dough)

Step 4: Use in the Volcano

  • Cut the bottle in half using the top half for the spout
  • Place balloon inside the top half of the bottle
  • Tape the opening of the balloon to the opening of the top half of the bottle
  • Push slime into the opening of the bottle
  • Place the your slime contraption underneath your volcano for the opening and wait for the slime to release

Step 5: Storing Slime

Use any kind of small container to store slime at room temperature


Things you need:

Safety Goggles
Plastic sheet or trash bag

Rubber Gloves

Medium sized soda bottle


Liquid Dish soap

Food colouring

1 package of Dry Active Yeast

Measuring spoons

Small cup

Warm water


Hydrogen Peroxide

Step 7: Safety and Clean Up

  • Put on your rubber gloves and safety goggles
  • Lay down plastic sheet or trash bag on the area you will work at

Step 8: Mixing Part 1

Take the medium soda bottle and pour in 4 ounces of hydrogen peroxide* (here you can and should use the funnel)

Step 9:

Add a squirt of liquid dish soap and food colouring into the bottle

Step 10:

SWIRL DON’T SHAKE the bottle to mix the solution

Step 11: Mixing Part 2

In the small cup mix 1 package of dry active yeast and 4 tablespoons of the very warm water with a spoon* (If mixture is too thick like paste add a small amount of water to thin out the consistency)

Step 12: Use in the Volcano

  • Put the medium size bottle underneath the volcano so the bottle opening lines up with the volcano opening
  • Use the funnel again to pour the yeast mixture into the bottle with the hydrogen peroxide mixture.

Step 13:

Wait for it to bubble and explode

Step 14: CLEAN UP

Throw away the plastic sheet and you warm water and soap to clean up