A friend's daughter goes to the same summer camp as our kids. The summer camp gets out at 4 pm, so we're going to pick her up and have her hang out with our kids a few times a week.

What are some good indoor activities to keep them busy? So far we've been doing arts & crafts, coloring, and board games. Some of those ideas are messier than others though! Any ideas on fun and cheap activities to keep kids busy for two hours or so?