A cabin-style trailer Rockin’ M Concessions built for Billy Jack’s Home Brew. The couple built a home on 80 acres outside Humboldt, where Beckie continues her medical career while the family’s second business has steadily grown. Rockin’ M Concessions officially began in 2021, though the idea had been on Beckie’s mind for years. That customer has gone on to build a thriving pizza business, something Beckie said remains especially rewarding to watch. “We build any kind of custom-built trailer,” Beckie saidToday, Rockin’ M builds everything from coffee trailers and ice cream trailers to cocktail bars, dog grooming vans, mobile flower shops and other specialized businesses.