I am a massive fan of all flying things, especially birds. It was my dream to imitate flight on a budget. I made an RC aircraft adhering to the bare minimum for sustained flight and control. I dare to call this one of the cheapest actively controlled flying structures; the cost is not far from the price of a brushless motor and Lithium-polymer battery. The control signals were transmitted using RF modules, not a reliable way to control the placne, but as you might have guessed, it is ridiculously cheap.