A helpful reminder: Forgetting to lock up for bike is a no go but forgetting you've attached a disc lock can cause even more damage. Simply attach one end to the disc lock and the other to your handlebar as a reminder not to ride off. The cable also deters thieves by making it known that you have bike security!
Kryptonite Disc Lock Reminder Cable - Orange
• Flexible tightly coiled cable reminder to prevent riding away whilst disc lock is engaged • Bright orange cable loops from your disc lock to your handlebar • Approved to Thatcham CAT3