Idea #5: The $3 Bat Wall Everyone Photographs
Black paper bats swirling up a wall cost almost nothing and photograph like a designer install. Cut them from black cardstock (or buy a pre-cut pack), bend the wings, and stick them flying out of a corner or up and around a mirror.
Start the swarm low and dense, then let it thin out as it rises — that gradient is what makes it look alive. Removable glue dots protect your paint. This is the single most-pinned Halloween wall idea every year, and it takes under an hour from start to finish.
