This is a fun idea. Although walking into someones house with this on the wall, might make me a little bit worried.
“A little smaller than a big kitchen knife, each Knife Coat Hook is ready right out of the box. Just pick your spot and screw it in (drywall anchor included). Instant assassin or ninja attack. Get a few and make it look really convincing. Each Knife Coat Hook is made of super durable polyurethane with an integrated steel plate and welded screw.Knife Coat Hook – because sometimes even the suggestion of badassery is badass.” –ThinkGeek