To all the teenage guys out there who haven’t care to learn the difference between a nut and a bolt or how to use a power drill, I just wanna say: It gets easier. Once you get out of school you can totally furnish your apartment with easy-to-assemble pieces like this Slot-In Storage system from Belgian designer Xavier Coenen. A stackable solution for all your shelving needs, this birch plywood furniture requires no screws, bolts or use of adhesives for setup, and it’s all customizable and functional.