I love wall decals/stickers. Currently I don’t have any in my house but I wish I did. There are some really cool ones out there. Recently I came across the site called FicklestiX. These large surface stickers peel off and go back on again very easily. The website has many different styles and you can order custom stickers. My favorite design on this site are the space invader stickers. Although not sure which room I would put them in!