2pc Fully Adjustable Ninja Boot Shoe Foot Claws Climbing Spikes Tekagi Shuko for $11.99 + free shipping
Ready to scale walls like a ninja? Then these foot claws are a good place to start.
Modeled after traditional ninja climbing tools, these claws are designed to be worn on your feet to give you a better grip. Simply tie them over your shoes or feet and you are ready to ascend.
These claws are even useful for walking on ice or other slick surfaces. In a pinch you could even use them to defend yourself from other ninjas. Just be careful as the spikes are quite sharp.