One of their most distinct pieces of typical apparel, aside from the side-cocked hat, is a special blade they carry, called a Kukri. Useful for both utility and in hand-to-hand combat, the Kukri basically behaves like a cross between a knife and an axe, thanks to its distinct forward curve. It is prodigiously powerful in swinging, lending itself for chopping through brush.... or through a foe.
I've spent the afternoon making one, emulating the traditional Nepalese kukri. Modeling is done (aside from a few smoothing nits), and UVWing of the blade is done. I'm contemplating texing it myself, or asking around for someone better at making old dirty textures than I.
http://img837.imageshack.us/img837/3259/kukrirender.jpg (with combat knife for comparison)
http://www.knifecenter.com/kc_new/store_detail.html?s=KUK101
Plans are to have it have a >1x limb damage multiplier, a >1x crit chance multiplier, and maybe a hidden perk that does extra damage to the head (or maybe insta-kill).