Add more storage under your bed by making a roll-out bin out of old dresser drawers. If you are getting rid of an old dresser, save the drawers or buy some at a flea market. Then, add some casters and funky knobs.
What you need: Start with old vintage dresser drawers. Replace any ugly knobs with pretty vintage ones like Anthropologie's Appleton Knob ($10) or Tweet Knob ($10). Add four Home Depot Wheel Swivel Plate Casters ($3 each) to the bottom of each drawer so you can easily slide the drawers out from under your bed.