You really might not have to spend any money on this Easter decoration idea, depending on what you already have at home. Painting terracotta flower pots is a great way to change things up a bit, and if you have kids, then this is a really fun little project for them. If you don't have flower pots, then you can get some at most dollar stores, which also usually carry the right paint.
After you've painted your pots, and if they're small enough, you can also consider using them as a centerpiece or just displaying them around the house or out on the porch.