Nonacopter

Parts list.

Some balsa (or wood of your choice) and BBQ skewers.

hexTronik 20gram Brushless Outrunner 2300kv

Good for 3S if you don't push them too much.

HobbyKing 12A BlueSeries Brushless Speed Controller

I flashed these with SimonK firmware.

Hobbyking KK2.1 Multi-rotor LCD Flight Control Board

or smaller.

5030 Propellers (Red) - 3xCW and 3xCCW - 6pcs per bag

5030 Propellers (Black) - 3xCW and 3xCCW - 6pcs per bag

For more build information check out my mini tricopter, it is very similar.