The Cheerson CX-10C Quadcopter is defined as the world’s smallest aerial photography spirit. It is priced at $30 and has a 3 megapixel camera. It can take pictures and record videos but it cannot record any audio. It can store an SD card of any capacity.
It is pretty light because of its small size. The transmitter is also very small and works on AAA batteries. It can be bought here.