Make the most of a tight space with these easy tricks. Have galvanized metal cut to fit the back of the cabinet and inside the door. Adhere metal with caulk. (If your mirror has clips, loosen them, and slide the metal behind them.) Attach magnetized hooks, a notepad holder for brushes and combs, and spice canisters for hair elastics and barrettes. Group like items in votive holders and small acrylic boxes; double surface space with acrylic risers.