An egg carton garden is incredibly simple to put together and a great introduction to gardening for younger children.
Here's what you'll need to make it:
An egg carton (preferably made with recycled paper) Potting soil A packet of flower seeds (if you want to replant them outside, then marigolds or pansies are ideal) Water
Directions:
Cut the lid off the egg carton with a pair of scissors, ensuring that the egg 'cups' are intact.
Fill each egg cup with the potting soil.
Make a little hollow in the soil in the center of each egg cup and drop in two or three seeds. Gently cover with the soil.
Put the egg carton in a sunny place (ideally on the windowsill).
Add a little water to the soil when it looks dry (but don't add too much).