Floating, spinning balloon with hair dryer. There is no helium, but it flies!
Spinning Balloon Index
It's almost eerie, the balloon floating in space and spinning furiously like some spacecraft out of a science fiction story! Pointing the hairdryer -- it doesn't even have to be directly under the balloon -- gives you remote control to hover and land. It's quick and easy to make, too.
I'd like to know how this project goes for you. I'm happy to answer questions about it. Feedback from you is an important way for me to know what works and what needs clarification.