I know that some people who have built strawbale houses and have concrete floors have used this paper bag flooring method. It looks great and lasts a long, long time.
My sister did something interesting with sheets in the house she was renting when her son was little. She used flour paste and covered his walls with the sheets. At that time Brett was big into firetrucks and firemen, so one wall was an inexpensive firetruck themed print. Then she made a fireman's ladder out of long strips of velcro and glued that to the sheet. All of his stuffed animals had a corresponding small strip of the velcro just tacked on. When he had to put his toys away his stuffed animals stuck to the velcro on the wall! He loved rearranging them to "save" someone, as if they were fireman responding to a fire. It was so cool! When she moved she just pulled away the sheet, used a mop with clear water and rinsed off the wall, and walked out of the room. She also did this with her daughters' rooms, using more feminine and age appropriate sheets. Necessity is the mother of invention!