What you need:
1 or more eggshells (broken in half)
Bottom of egg carton
1 or more small pieces of sponge
Seeds ~ Example: Grass seed or Herbs
What to do:
Place eggshell halves into egg carton to hold them steady
Wet a piece of sponge and place it in the eggshell
Sprinkle seeds on top of the sponge.
Sprinkle a little water on the sponge every day.
The seeds should start growing iwithin a week.