Not today, but I recently changed Camelbaks, which entailed removing the old one's contents and playing Gear Tetris (TM)

to get it all into the new bag. No sense in undertaking such a task without a camera in hand. For any who may be interested, here is what rides around in my Camelbak:
Starting on the top left, we have a rain jacket, LifeStraw water filter, pepper spray, helmet light cable, and spare water dish for canine companion Chip. Then a first aid kit, snake bite kit, power bank, and albuterol inhaler, a relic of my bout with long Covid. After that there's a backup tire pump, a pair of cyalume (glow) sticks, and my emergency fire making kit consisting of a match-filled emergency whistle and a couple of cheater fire starters. Next to that is my utility knife, which includes a flint stick capable of standing in for the matches. In theory, at least.
Moving on, there's my 2nd emergency tube (the first rides in my undersaddle bag; see discussion on the previous page of this thread), then a pair of emergency rain ponchos, travel toilet paper, an old school glue patch kit, a tube of pelletized paper towels, and a different kind of the same product below that. Next we have a lensatic compass, another glueless patch kit, actual tire boots, two more glueless patch kits, yet more tire levers, and a couple of Clif bars. Not pictured but also included is an honest to goodness shiny silver emergency blanket. Finally and also not pictured, my helmet light's battery rides in my Camelbak.
I think the patch kits in particular must have multiplied in the darkness. I actually ended up leaving a couple of them out of the new pack. I imagine it goes without saying that while I ride with this gear any time I roll my touring bike, I do not expect to need much if any of it for wandering my local area. Certainly not the fire making tools, 😃. This setup is intended for long distance cycle touring somewhere in the back of beyond. Despite the fact that I've yet to put together more than day, and some hub and spoke tours, I like to ride as though I'm doing the long distance thing any time I roll on my touring bike.
It is also possible, if only just, that the old saw about packing one's fears is true

.