Pocket Grappling Hook
Originally designed to handle detonation and trip wires, and straight out of any Batman-wannabe's dream, this Pocket Grappling Hook ($27) is perfect for any mission. The 1"x5.5" water resistant shell holds the hook's spikes when you're on the move, and can be filled with water or sand to add weight for more accurate throws. Forget all that "not certified for life support" stuff — they've been tested at more than 350 lbs., which should be enough to hold all but the biggest of crime-fighters. [Thanks, Paul]