I have always wanted a tiny little helicopter that I can fly around inside the house.  $30 at Toys R Us!  These are awesome!  They are light enough that if they hit something fragile (Die, Precious Moments waif, die!) the chopper will bounce off without damage (Curses, foiled again!  But your time will come, vile ornament...). 

My wife spent several minutes telling me not to scare the dogs- never mind that a) I had yet to master the rudiments of controlled flight and any scaring was entirely incidental, and b) the dogs were prancing about on their hind legs trying to get a closer look.  When it was the wife's turn, she managed to crash the chopper into the dog not once but three times, which fortunately the dog treated as play instead of threat.

You can get 7 to 10 minutes of flight from a 20 minute charge.  After three days of play, I have not yet drained the 6 AA batteries required to power the system.  The chopper is so light, even slight breezes will affect it, but I took it outside during the calm of dusk yesterday and got some quite impressive height and distance.  It was much easier to control, too, since there were no walls to interrupt my flight path.