U-lock holder

Ride Worry-Free - Keep your bike safe from theft with this complete lock set, including a 4x8-inch U-shaped lock, 4ft security steel cable, mount

Bikeroo Bike U Lock with Cable - Heavy Duty 17mm U Shaped Lock for Bicycle Security - 4ft Steel Cable, Mount Bracket, and 2 Keys - Anti-Theft

Fabric Horse, U Lock Holster - Small

Where to put your bike lock when riding

U-Lock Mount Xiaomi Scooter M365 / M365 Pro by Christoph

U-Lock Mounting Bracket - SEATYLOCK

Features: classic styling and good build quality. The bag can come off quickly and easily. Once you mount the item and tighten the strap, the holster doesnt move. Does not interfere with the rear derailleur at all. A leather strap similar to a leather watch band is also supplied that can strap the back to any tube.

Tourbon Cycling Bike Bicycle Bag U-Lock Holster Pouch - Canvas and Leather

U HOLD – ULAC

U-Lock Mount Bracket

Kryptonite Keeper U-Lock

The New DIY U-lock Holster : 7 Steps (with Pictures) - Instructables