The deadliest thing in my room, and within convenient reach on the top of my tower, is my knife. Its a cold steel bottle-cut style blade, called the Counter Taci. Its meant to stab, and thats about it.
[http://img193.imageshack.us/i/0918001048.jpg/]
And if things get real ugly, I can always turn around and grab this, give it a swing.
[http://img684.imageshack.us/i/sword0918001055.jpg/]
Or just go downstairs and get my Browning Auto-5.
[http://img543.imageshack.us/i/0918001104.jpg/]
But yes, the knife is the first line of defense.