You’re building a stuffed-animal zip line by holding a cord against the wall, hooking a cute stuffed animal onto it, then letting the animal slide down as you time it. “Does anyone know what gravity ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A while back, my son and I started talking about building a zip line in the backyard.

Editor’s note: This tour of small businesses across the country highlights the imagination, diversity, and resilience of American enterprise. In 2001, Eric and Sarah Cylvick of Park City, Utah, went ...