Various Lezyne minis or full size Silcas, depending on the tires/pressure.

Yes, you were lucky to get a rather pain free reminder.
Take it as a gift.

I have a habit of simply moving a seat bag from one bike to another, swapping tubes, etc as req'd. One time moved it from my 26" x 2.3 bike to a 700c x 28 and forgot to swap tubes. Of course I got a flat a week or so later and no way the tubes were going to fit. Had to call my wife who was fortunately working from home.

I have a hoard of 10-15 long discontinued Blackburn FP-1 frame pumps in various sizes with a bin of replacement parts. I was never comfortable with either CO2 or mini pumps. I do keep a Fumpa e-pump on my hi volume tire bike with tubeless rims simply to pop the bead should I have to fix a flat.

I carry a cartridge and a mini pump.

For my tubeless setups, I also carry a DynaPlug kit for plugging larger holes that slime won't seal.

My fave mini pump is Topeak's mini race rocket. I carry the MTB version b/c I own no tires that go over 75psi. Always carry it, even when I have co2.

+1 on the Lezyne Road Drive mini-pump.

Hmmmm, everyone posting here has the pump on seat tube. I have kept my Leyzne on the down tube. Does it make a difference?

My mini-pump goes in my jersey pocket. Don't even notice it.

i had this kind of thing happen to me a couple times when i was a kid, one time i rode about 20 miles on the rim, ouch.

learned my lesson, pump, tube, patches, tools, every time

Yeah, my bike is road only, unlike the OP's gravel bike, so skinnier tubes probably.

I was not only praising CO2, but also addressing Mr. Pink's situation, where he had the CO2 cart but no adapter. An Air Chuck is really small -- about half the volume of a multi-tool -- so there's no reason not to always pack one. I warmly recommend it if, like Mr. Pink, one has already boarded the CO2 train. But as this thread shows, there are lots of ways of skinning this cat. :)

Hmm, not sure.. not even sure why I chose the seat tube.. maybe the picture was that way? After 30 yrs in the military, I tend to be a rule follower.. ;)

I would think as long as it doesn't impede your pedaling, it shouldn't matter..

For the past 20 years my single bikes have all had pump pegs. The Zefal HPX frame pump has has been very reliable. I'm still using my second one. With the arrival of my new bike, I treated myself to a Silca Impero Ultimate II frame pump. It is truly a work of art. In our tandem trunk bag, we keep a Lenzyne Micro Floor Drive pump. I tested it back in ~2012 but have not used it since as we have never flatted. Knock wood. Now that I think about it, I should test it again.

Having had a few C02 failures, I now carry both a pump and a CO2 set up.

Tube, 2 CO2 cartridges, CO2 head and presta adapter in my tool wrap with a pump in my pocket. I have a silca tattico, it works well to get the tire up to a pressure I can ride to gas station to top up.

On longer rides I take an extra tube in my jersey.

For mountain biking, I'm still on tubes and like CO2 for the speed of avoiding being eaten alive by flies.

Nope, road bike. The section of the Empire trail I live near is a marvelous freshly paved 25 mile stretch north to Hopewell Junction and beyond, remote and peaceful, and has an actual grade to it back and forth. I can wear earbuds and just hammer, if I want. But, as I realized, a little too remote.

On my metal frame bikes, I'm using full size frame pumps, either a Zefal HPx or a Topeak Road Master Blaster, which I mount under the top tube. (Of the two, I prefer the Road Master Blaster, as it is more ergonomic to grip, and the barrel appears to be more dent resistant.)

On my carbon frame bikes, I'm using Crank Brothers Sterling Gauge mini-pump. This is either stowed either inside or under a saddle bag.

The frame pumps will inflate a tire faster and easier, but unfortunately there is no easy way to mount a frame pump on a carbon frame (and given that two of my carbon framed bikes are aero bikes, you probably wouldn't want to mount a pump on the frame anyway). The features of the Sterling Gauge pump are that it is just short enough to store under/in a saddle bag, Is switchable between low pressure/high volume and high pressure/low volume modes, and has a built-in gauge. (I like the built-in gauge because pumping up a tire with a mini-pump takes a long time and many strokes, but at least with the gauge you can see that you are making progress :).)