So you want to experiment with your own flying machines? The Crazyflie 2.0 kit has you covered. It is a solderless kit that weighs 27g and fits in the palm of your hand. Simply attach the motors to the circuit board frame, and you are ready to fly.
The Crazyflie 2.0 is an open project ready for developers. Source code and hardware design are available. The Crazyflie 2.0 is compatible with Bluetooth devices. It has a 2×10 pin expansion port.