8. Torii Hunter

Torii Hunter was pitched what he thought was the next big invention to hit the market, furniture rafts. The idea was that in a flood, a homeowner would be able to save themselves by inflating a raft underneath their furniture and floating their way to safety.

Hunter immediately invested $70,000 in the idea. The man who pitched the idea took his money and never delivered anything. In fact, he came back asking Hunter for $500,000 more, which is when Hunter finally made the right decision to cut his losses and move on with his life.