What to do on a rainy weekend with kids?

All this rain and icky weather down here in Florida made us have to cancel our scalloping plans for tomorrow.... what do we do now! I'm sick of being in the house already. It's been terrible weather since Sunday.. We have gone to the indoor skate park, skating rink and movies. Any other suggestions?! We don't have a decent museum, or inside playground. My kids are 7 and 3. Thanks