10Toilet PlungerMatt Weber: October 06, 2013 | 107,586 views
An intruder will probably be so confused by the sight of you wielding a plunger in their face that they’ll give up and go home. The genius of it is in its stupidity. Not to mention, we're going to go out on a limb and say your toilet plunger might not have the best smell. Either way, we're confident this household defense item won't disappoint.
You only get one shot with this because handheld vacuums are brittle pieces of plastic just waiting to explode into a million little pieces at the slightest provocation. Bonus points if you keep it half full with dirt, nails and, I dunno, sulfuric acid.