I picked up an indoor RC helicopter about 4 or 5 weeks ago at one of those "As Seen On TV" stores in Willowbrook Mall.
$39.95 + $8 for the extended warranty (highly recommended because it covers items broken by poor piloting skills) which is good for 3 years. The battery gives about 7-9 minutes of flight time and charges via a USB on the computer.
Good fun on these crappy days, too small to break anything or mark the walls or ceiling and great for chasing the cat around.
Pretty well the same as this, different colors and about 7-8" overall length.
We have 10' ceilings in most of the house, 15' in the front room so I can nerd out without the neighborhood watching me!