Backpacks are mostly good if you want to carry bigger or much more stuff. For everyday stuff though, not really necessary since it’ll just be my Phone, my Wallet, a bottle of Advil, and maybe my Steam Deck (in case I want to kill time Gaming while I wait).

Also you can put enamel pins on a messenger bag, and depending on the material it works just as well.

Enamel pins are so damn expensive

I still buy a shitton of them

But damn does it hurt my bank account