I’m not a huge fan of wall coverings but there’s no denying that this simple, modular solution is pure genius. Using a combination of cards and connecting crosses, IXXI allows users to make, build, and install their own wallpaper, room divider, or wall covering in any size. Looking for some inspiration? The site also has a special collection of pre-designed works like this charming Girl With a Pearl Earring pixelart covering. Get yours here people!