The kids are decorating index cards to go into the sack lunches that the Ronald McDonald House gives out. They are drawing on one side and writing jokes on the other side. (After our trip I will have them draw their favorite animals and write interesting facts on the back.)
A pack of 100 index cards costs less than a dollar. I am having the kids do 5-10 at a time. I am considering inviting some of their friends over to make cards too.