Some people get rich through traditional careers, but others strike gold in the most bizarre ways. From selling pet rocks to eating on camera, these seven people turned unexpected ideas into massive fortunes.

1. Gary Dahl – The pet rock millionaire

In the 1970s, Gary Dahl became a millionaire by selling rocks . Yes, literal rocks. He marketed them as low-maintenance pets, complete with a box and breathing holes. It started as a joke, but he sold over a million Pet Rocks, proving that marketing is everything.

2. Joel Comm – The guy who made millions from a fart app

Joel Comm created the iFart app, which—no surprise—just plays different fart sounds. It became a viral sensation, making millions in downloads. Who knew bodily noises could be so profitable?

3. David Rees – The profess

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