The wallpaper that is 25-40 DB that cannot be moved around in your room.  As most have noticed, even though we can see our rooms, the wallpaper and flooring is the default gray color even though it still shows up on your avatar.  When you try to buy a new wallpaper in hopes to getting rid of that gray default wall, your money is deducted by the wall doesn't show up.  They need to do some reimbursing.