I've got a bed with drawers and a cabinet in the front, and a 3-foot wide by 2-foot tall by bed-length long gap behind it. By pulling the top, actual bed part away, I can slip into this small gap and pull the bed back over me. As such, I have a pillow, a blanket, a fan for ventilation (it gets kind of stuffy back there), a few books, and a small flashlight.