Another solution to the corner dilemma? This clever door-turned-bookcase. All it takes to DIY your own is a salvaged door, a circular saw, and some metal brackets. A coat of paint can make the piece as bold (turquoise anyone?) or as subtle (think off-white) as you want. Use it to display heirlooms in the living room or toys in the kids' bedroom—be sure to anchor it to the wall to prevent tipping.