I wanted my daughter to graduate from college debt-free, so I bought a storage unit business. It paid for her entire tuition.

Courtesy of Lauren Trippeer

Storing other people's shot glass collections is not what I dreamed about doing when I was a little girl. I didn't visualize myself shoveling out storage units full of cat toys, abandoned tires, chainsaw parts, and cheese graters. But when it came time to pay for my kid's college tuition, all ideas were on the table.