Don’t toss those Bed, Bath and Beyond coupons when they expire! Save them. The store honors all BB&B coupons, no matter how old they are. Besides that, they let you use one coupon on each item … buy six towels on sale and use six coupons for another 10 or 20 percent off each one. So bring a bunch along next time you shop. You probably have at least a dozen tucked away in a drawer somewhere — good on the next dozen items you buy. Not many stores do that.