wall between the room of my housemate and I is very thin, and it can be embarassing at times. Any way I can soundproof it? Can't do anything permanent as its a rented house. I've read all the tips that suggest using : egg cartons, mattresses, mcdonald cup holders, rugs
but i need something that WILL work. don't mind paying a little for it. any ideas?
its a small wall, possibly 3.5 x 2.5m