Some unconventional alternatives to a mattress and bed frame: - if your floor is warm enough, a sleeping bag on the floor (or perhaps on a foam mat -- the kind

Some unconventional alternatives to a mattress and bed frame: - if your floor is warm enough, a sleeping bag on the floor (or perhaps on a foam mat -- the kind used for camping) might work - try a hammock (some are sold with special suspension intended to be used indoors) - a couch or futon