This list wouldn't be complete without one just-in-case cleaning aid. We like retired toothbrushes because there're -- well, they're cheap. Repurposing them makes good sense, too. If you need to scrub a line of soap scum off the tub or get a dab of lime scale off the showerhead, a toothbrush is the perfect all-purpose fixer upper. It's low tech, gentle, and if you tackle a really nasty chore with it, you can pitch it without remorse. What could be better?