Asking an overnight visitor to sleep on the floor is no longer considered rude. In fact, the best inflatable mattresses, which can be set up and stowed away in minutes, are more comfortable than most sofa beds. The AeroBed Deluxe Inflatable Full Mattress ($180, www.bedbathandbeyond.com) has a built-in pump that allows you to inflate, deflate, and adjust firmness with the touch of a button, and the smooth cloth exterior keeps a fitted sheet taut. Offering guests fresh toiletries is a gracious touch. Give them shampoos, moisturizers, and soaps hoarded from your hotel stays. The American Hotel & Lodging Association says you should not feel guilty about taking home those souvenirs. Just don't pack the towels.