Uhh. Bag O' Dice (Laugh if you want, but that thing smarts), Bootknife, Sort-of-dull rly large kitchen knife (I was sharpening it but the thing REFUSES to take an edge) Gamecube, and bunches of controllers. I mention the latter two simply because controllers would make decent flails and the Gamecube is a brick, so it probably won't break, and if it does I will only miss 3 games.
At 1.5 Steps however: My choice between a Guitar, Rockband Drum-set, Large metal briefcase filled with computer stuff, anything within my Golf set, 2 Bokken, Large lamp, Recurved bow, Semi-Auto .22, or 12-Gage Shotgun
Best part: No matter where they enter from, so long as conventionally (I.E. Door or Window as apposed to making a Large random hole in my wall) I am far closer to the shotgun than they are.