I have a pair of married students who have been gracious enough to give me a Yule gift every year for the last few years. Last year there was this squat little sling bag in the box. I kept it in my office for a while trying to figure out what to do with it.
I normally keep a Deadpool-inspired duffel bag full of magazines handy for range trips. It will hold more than I want to carry. I took a few mags out one day to lighten my load and set them beside that slingbag inadvertently. When I came home and started refilling my empty mags I had a " You got chocolate in my peanut butter" moment. I might as well throw some mags in there.
Since I already had a bag with mags in it, I still needed a purpose. So I added a few more things and designated it as a kit for my friends, teammates, training partners, students etc. At a Study Group, we brainstormed an acronym.
R.O.P.E. - Replenishing Other Peoples Equipment.
I settled on a Patriot Smoke in the top, and a couple of Road Flares and some 123 batteries in the bottom. This isn't a bag of "You may need this" which is why there is no medical gear in it. It's a bag of "since you used yours up, here's some more" If a dude used all his med gear up, we need to be taking him, not giving him more bandages.
I didn't put pistol mags in there for a couple of reasons. Since the most usable mag would be a G17 mag. It's the most popular caliber for the most popular brand that fits some of the most popular models. Problem One: the bag only has so much space and if a dude has gone through his pistol mags too, for sure he wants some more rifle mags. Problem Two: I only own a small handful of G17 mags, I didn't really have "extra" to stow in the ROPE bag.
* No actual rope is stowed in this bag.