That's easy, buy a decent quadcopter, and tie a small monitor at the bottom.
You should be able to acquire all these stuff on Ebay.
Or you can buy quadcopter with camera already installed, this is normally more expensive though.

OdeliaTurner That's easy, buy a decent quadcopter, and tie a small monitor at the bottom. You should be able to ...

I did the same practice, the monitor thing really works!