PETPAWJOY Halloween Decoration 3D Bats Wall Decor Stickers Let creativity flow while you swarm your space with the PETPAWJOY Halloween Decoration 3D Bats Wall Decor Stickers ($16). The adjustable 3D bats — which can be placed on walls, windows, or doors — have double-sided adhesive allowing you to arrange and reposition however many times you'd like. Image Source: amazon.com PETPAWJOY Halloween Decoration 3D Bats Wall Decor Stickers $16 from amazon.com Buy Now