I knew I'd see this pun, and it is an offence, but in just cause you can get away....... Maybe
There is also the option of using the space for a back-up credit card, emergency phone list (who memorizes numbers with smart phones now?), or other item you don't want to have taken in a robbery.
Check my "Started Threads" for Equipment Exchange ads: https://www.canadiangunnutz.com/forum/member.php/76158-Aniest