These things are great, we've had a couple. $20 on Amazon, it's the Syma S107 3-channel. They're well built and fly surprisingly good. Highly recommended as a simple gift or just for goofing around at the office.
That's all I used mine for, that and trying to land it on the ceiling fan blades...that takes talent. It's pretty challenging once you establish a hover over the blades and they start a slow rotation. With my 2 we'd play a dogfight game where you'd win by getting above the other guy and your rotorwash would force the other heli down.