This is the pouch I carry that makes it easy to swap between my sling and work backpack depending on my day. I get lazy to keep switching the same essentials back and forth (not to mention make it easy to forget to move something) so the pouch solves that problem.
Unmentioned/unseen:
Cologne vial
Paracetamol
Adhesive bandages
Extra CR123A battery + wand for S1
SanDisk Extreme 64GB USB 3.0 flash drive
Folding phone stand
Keychain
