I carry whichever I have room for. CO2 cartridges, I have them but have never used them, but the size makes them the first pick if space is limited. I have one of those small bicycle hand pumps that do work and are pretty small.
I’ve used the CO2 cartridges on bicycle tires. But, I’d think it would take a lot of those little cartridges to fill a motorcycle tire. I carry a 12v pump other than when I touring…due to lack of space. And while touring I have one of the fix a flat aerosol cans, that are about the size of a beer can. But, I’ve never used one.
Countless times I've used to help roadside repair and holds a charge for months and have never drained the battery. At least 5 buddies have since made a purchase
12V pump. Years ago I carried Co2 cartridges but had reservations that they held enough to bring the tire up to a safe operating pressure. Should have tested them but never did.
12v pump here, fits in the swingarm bag with a jump pack, zip ties, fork lock, cable lock, head rap and some other stuff.
I need to get a small med. kit.