This guy makes $10,000 a month shipping potatoes

The next time you have to mail a birthday card, party invitation or thank you note, why not send a potato, instead?

Yes, that's right. A potato.

Last May, University of North Texas alum Alex Craig launched Potato Parcel, a website that will ship an inscribed Russet potato to your friends (or enemies) anonymously.

While the concept may seem strange, the revenue speaks otherwise. The 24-year-old has averaged $10,000 per month in sales since the business launched in May 2015. He has sold more than 3,000 spuds in just four months.

Surprisingly, Craig's is not the only business that caters to tater mailing—and not the first.

Mail A Spud, which launched in 2014, doesn't waste time with envelopes or boxes, like its competitor. Instead, the company will ship you a potato with the address and stamps right on the skin. The downside? There's no room for personalized message.

Before you knock this business venture, note that a 22-year-old Australia entrepreneur sold his glitter prank website for $85,000 in January of this year.