Some people’s trash becomes Michael Haskell’s treasure. The 18-year-old buys abandoned storage units in the New York tri-state area and sells their contents. His business, Mike’s Unique Treasures, brought in about $135,000 in 2025 from eBay and auction sales, and another $85,000 from January through mid-July, according to documents reviewed by CNBC Make It. Haskell’s entrepreneurial ventures didn’t start here. Growing up, he’d sell books for a few bucks on eBay or buy rarer Legos and hold onto them to turn a profit after they went out of production. “I never knew what I was going to be doing” career-wise,...