8. Homemade Slime

A modern classic! DIY slime is gooey, stretchy, and endlessly entertaining. It also doubles as a simple science experiment.

Materials Needed:

  • White school glue
  • Baking soda
  • Contact lens solution
  • Food coloring or glitter

How to Make:

  1. Mix glue and a few drops of food coloring.
  2. Add baking soda and stir.
  3. Slowly add contact solution until the slime firms up.
  4. Knead until smooth and stretchy.

Why It’s Great:
Kids love the sensory play aspect, and it teaches basic chemistry principles. Just be sure to supervise younger children.