Materials Needed:

  • Glass jar
  • Soil
  • Small plants
  • Stones
  • Water spray

Steps:

  • Add stones at the bottom
  • Add soil layer
  • Plant small plants
  • Lightly water
  • Close or leave open

Pro Tip:

Use succulents for low maintenance growth.

10. Waste Material Robot Model

Create a robot using household waste materials—perfect for science fairs.