Cheap projectors have become a popular Halloween accessory for beaming ghosts, bats, or seriously spooky mist on the outside of your house, instantly turning it into a prime venue for attracting trick-or-treaters.The type of projectors I’m talking about here aren’t necessarily video ones, but lamps paired with rotating slides that can be easily stashed behind a tree, bush, or maybe a plastic tombstone where they can create maximum lurid effect within a minimal footprint.But if you own a video
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