I totally love this idea of a Kids' "ATC (Artist Trading Card) Swap" hosted this year by Bright Eyes + Blue Eyes. The whole concept is this: you register your child and then they submit five small works of art (sized at 2.5x3.5") to other children in their group. Any medium can be used.
Your child must be at least 4 years old to participate. The deadline for registration is April 4th; submissions are to be mailed out around April 18th.
My girls are super-excited to participate! Not only does this give them a chance to flex their artistic skills, but they will also look forward to receiving five different works of art from children around the country.