my wife ran across this while Christmas shopping...looks like a cool way to use our HT rooms for the kids. You know the Planetarium was always a cool trip while a kid. Not sure if it's cheesy, but maybe worth a look. They also have a set of planet/stars to mount onto a ceiling...possibly another way to decorate a darkened HT room?
http://www.lillianvernon.com/catalog...nsembleId=3488