Summer Days & Trying Not to Melt

It has been a HOT past couple of days over here, and being 7 months pregnant and having an active preschooler makes these days even more stressful.  I've been searching for some easy, fun, and COOL activities for us to do when its 100+ degrees. I know there is always the pool, but I don't want to be anywhere NEAR a bathing suit right now! LOL So yesterday we went to a local magic show, and then had some fun with bubble rap! What are some fun, cool activities you guys do to keep your little one cool and happy during these long summer days?