Really? Why didn't I think of this. Grrr! It amazes me how the simplest or silliest idea can become a huge money maker.

This dude from Dallas is bringing in $10,000 a month with potatoes. Yes, potatoes. Alex Craig has a business called Potato Parcel where he will write a message on a potato and then mail it to someone for you.

According to WFAA in Dallas:

A University of North Texas graduate said he turned "the dumbest idea ever" into an online startup called "Potato Parcel." David Goins reports.

"I would say the two things that hold everyone back in life is fear and doubt," Craig said. "The fear of failure and the fear of wasting your time, and the doubt that you can actually achieve something big on a huge scale."

Craig, 24, said he came up with the idea for Potato Parcel earlier this year while having dinner with his girlfriend.