Not airsoft related but this new IRC helicopter at eHobbyAsia looks like fun:
Tokyo Marui are diversifying their product line of IRC helicopters, "SWIFT"
- Ultra-small size (30g only) make it fun to play indoor
- Tokyo Marui 3-Channels Infrared Control (IRC) Helicopter
- High-Performance Gyroscope let this small machine hovering in the air with stop, forward, backward operation
- Two LEDs blinking during flight
- Power by 3.7V 130mAh Li-Po battery can be charged from PC by USB connector cable