The High & Mighty 18-Inch Beveled Floating Shelf has a 15-pound capacity thanks to two metal hangers, whose sharp teeth push into drywall and leave nothing more than pin-sized holes. Frankly, filling them with spackle will probably take less time than the wildly brief installation. An included adhesive level makes the shelf easy to put up, and it even has markings for where to place the hangers. To mount the shelf, I placed the level on my wall, pressed the hangers into their designated spots, and hooked its corresponding metal slots onto the hangers. Boom—I’d hung up a perfectly straight floating shelf in minutes. After installing, I placed two hardcover books, a small lamp, and a vase of dried lavender on top, and it remained completely stable. The shelf is the perfect addition to my bare bedroom walls, and it even freed up space on my perpetually crowded desk. To buy: $25; amazon.com.