Reddit mentions of Battery Storage Case Holder/Organizer for 18650 or CR123A Battery (5 Colors Set)

This is always happening everywhere so please lets make something positive out of an unfortunate mistake. Leaving unprotected batteries in your pockets or really anywhere is a major risk and its not if but when the battery will make contact with something, It will cause injuries. Please talk to your friends and anyone you know that use 18650 or similar batteries. I know i have a bunch i use in my flashlights. HERE is a 5 pack of cases for under $3US with free shipping i just found on amazon. Most B&M stores ive been to give cases for out for free when a customer buys batteries. Please spread the word of proper battery safety

Probably the cheapest cases you'll find

Here is the mobile version of your link