Have a crazy idea? So did these entrepreneurs, and the results have been millions. Ever have an idea for a new product or service enter your mind and quickly dismiss it, thinking it’s a dumb idea? Let me tell you, you need to stop pushing those seemingly dumb ideas away! They could be worth millions.You never know the potential that those crazy ideas may have. Many successful entrepreneurs have sat right where you are, with what seemed like just a dumb idea. Only difference between their crazy idea and yours is, they acted on theirs! Here are 12 of the dumbest business ideas of all time, which actually made millions: 1. The Pet Rock. This has to have been one of the dumbest ideas ever, yet it took off like nobody could have imagined! Selling for around $4 per rock, small rocks were sold in cardboard pet carriers, leaving the company founder to have the last laugh as he carried millions off to the bank. 2. Flowb...