I have a roll-up air/fiber core mattress with a valve that releases the air pressure to roll up. It works ok if I do any remote camping. However; my body does not like sleeping on the ground much any more. I usually take one of those inflatable mattresses from WallyWorld if camping with friends.
When I was a kid; my mom always bought us those $.99 cent floats from the dollar store for camping. Of-course; you would wake up flat on the ground as all the air eventually leaked out. Those were some good times when camping and life was simple.