3. Spray Bottle

Why You Need It: The bottle makes cleaning large surfaces a snap, since you can just spritz and wipe. It also comes in handy for spraying homemade stain-removal solutions onto carpets and upholstery.
What to Look For: “Buy professional spray bottles — they’ll last at least 10 years,” says author Don Aslett. Go for plastic; metal may rust and compromise the mixture in the bottle.