My wife wants to put up a mural in my son's room that's about 12'x8' and wants to be able to take it down without leaving a mess of a wall behind. It's previously been put up with tape and tacks and staples so it's sort of a mess and needs to be pasted up this time. Is anyone familiar with any sort of 'removable wallpaper paste'? I couldn't find anything with google other than 'removable wallpaper'.