When you can't go outside to play, it's time to call on your imagination--and summon all the marvelous creatures you can think up. What's there to do when you're stuck inside on a rainy day? If you're like Kiki, with a big imagination, you teach your sister how to play the Think-Ups. It's easy: you take turns thinking up any animal you like (A bunny! A moose! An octopus! A koala!) and, just like that, that creature (or several of them)...