Don't feel bad if you looked at "Marine" "fighting" and "knife" and thought of the opening to Con Air. What, Nic Cage was an Army Ranger in that one? Anyway, the Ka-Bar Marine Fighting Knife ($50) has served alongside the few and the proud since WWII, earning legendary status along the way thanks to its comfortable leather grip, its ability to hold a sharp edge, and, like Cage, its ability to kill — one with a perfectly-pointed, straight edge steel blade, the other with lifeless dialogue. If you don't believe us, just ask the bad guys in The Rock.
Carry cords, keys, what have you with the S-Biner Ahhh ($4). This dual-ended product features two robust gate carabiner clips for carrying/joining rope, stainless steel construction, and two built-in bottle openers which will no doubt need require alcoholic acrobatics to open two at once. [Thanks, Weston]