Why limit yourself to a "kill box" when there are so many useful and charming patterns available: the "kill banana" ("Oops! Slipped!"), the "kill cross"(reserved for non-Christians) and my favorite, the "kill doily"(for the most vile of the unfaithful, cake-haters)?

I can almost see the UI for the "kill design" now: pre-defined patterns + GUI etch-a-sketch (for personalized kill pattern design), a kill pattern library, a website discussing design principles and associated blog, twitter feed ("Killing you softly NOW!"). It will be all the rage.