Cheap mini Camper UAZ Loaf - do it yourself

I like to go to nature, but sleeping in a tent is not comfortable, I decided to modify my loaf. And I will not stop there. I have a stock loaf of seven local, without an elevator. First of all, I made a sleeping bag shelf from a 20x40 profile pipe and 15 mm plywood. Installed an uninterruptible power supply unit 12 / 220V.