I just saw a great video about training crows to collect discarded coins. 215 million dollars worth of change is lost in the US each year. This guy built a vending machine that dispenses peanuts to crows in exchange for them finding coins in the streets. What a great thinking-outside-the-box idea to get crows to do work for peanuts. When can I buy a machine for my neighborhood? Or should I build and start selling them?