• cottage-cheese cartons
• seeds from apples, oranges, melons, pumpkins, or squash
• moss or charcoal (your mother can get them at a dime store)
Poke a hole in the bottom of each cottage-cheese carton. The hole will let excess water drain off. Set the cartons on saucers.
Put pebbles in the bottom of each carton. Put a layer of moss or charcoal over the pebbles. Fill the rest with soil.