Here is a modern take on trompe l'oeil that is certain to be eye-catching — a large tree that looks like it's in the distance. Imagine this decal at the end of a hallway.TIP: Wall decals are a great, affordable solution for a room where you can't wallpaper — or don't want to bother with the work involved. One large wall decal can be an instant pick-me-up for a room. In the bedroom, the headboard is often a focal point. If you can't afford the headboard of your dreams, consider a trompe l'oeil headboard wall sticker that gives the illusion of a three dimensional piece — and looks just as cool.