A good cable lock usually has a larger cable diameter which makes it more robust and stiff. Sadly, the same properties make it awkward to store when not in use.

Ulac 1970 is one member of its Memory System that incorporates a strong but flexible steen inside the rubberized shell. You can twist it to a certain shape and it will stay like that unless another force is applied.

Practically, the lock requires no specific mount to attach to, and you can store it safely on the frame, under the seat post, or wrapped around the handlebar. Attach it anywhere you want.