Previous pinner said: Used a twin sheet ( that I found for $2.24 clearance) folded long ways. Sewed 5 sections to the size of pillowcases and slipped the pillows in. I left each 'pillow compartment' end open so the pillows can be removed and we can wash the cover. Kids love it on the family room floor!
original source for this pin:http://www.gltc.co.uk/fcp/product/-/new_just_arrived/Bed-in-a-Bag/10000002595?awc=2187_1318260699_ea2a9c3d7ac2ef3ded1368ff24b6ee60