I had a pedal type air pump for our rural place years ago -- lever type stomp pedal, not rotating, sorta like the footswitches on dictation machines and other devices. I got it for occasions when the power was out and the big compressor tank was empty.
We mostly used it for the riding mowers, small tractor, low pressure on the pickup, that sort of thing, although we used it a time or two for air mattresses for guests.
It worked okay and would still be usable with an injured arm, which might be a factor in an emergency on the road. Although a CO2 inflator kit with spare cartridges would be better for bikes in most situations.
There are also small battery powered portable pumps which could be practical for bikes and trikes that are already fairly heavy. I'd consider one for my steel frame recumbent trike, which already weighs nearly 40 lbs. A little extra weight won't matter on that trike.