Mission Bikes is now stocking the locally-designed U-Lock Wrench, a lightweight, 15mm socket that fits onto the end of most Kryptonite u-locks.  For those of you who do not immediately see the utility of this device, it allows you to remove your wheels without carrying a heavy tool:

With the leverage of the “U” removing a wheel has just become impossibly easy. No extra tools needed to change a flat on the fly. And at 5oz. it's a lot lighter than an old fashioned wrench.

Smart.

[Thanks Marin!]