Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Oliver, who lives in Utah, built the DIY insect habitat with two hexagonal, 3D-printed units connected to his bedroom window. The hexagonal hives are modular in design, meaning Oliver can theoretically continue expanding their size by connecting additional units. A bedroom full of beesBuilding a bedroom beehive isn’t for the faint of heart. “That’d be kind of crazy.”For decades, Popular Science has highlighted the work of hobbyists.