Abstract: A reusable decal system for use with building bricks, toys, and accessories made of plastic or other similar substance, which includes flexible cling decals and a non-porous backing sheet and a system for customizably designing and printing images on the cling decals. The cling decals are cut in a plurality of shapes and printed with a plurality of designs as to form windows, doors, signs, vehicle parts, animals, people, letters, numbers and symbols for the purpose of creating customized play sets, building brick creations, toys, and accessories. In use, the cling decals are peeled from a backing sheet and applied to the plastic building bricks, toys, or accessories in a variety of configurations. The cling decals can be reused in different or changed plastic building brick creations, other plastic toys, or other plastic accessories.