SonexBuilders.net

Added this to the "onboard" travelling toolkit. Stolen from the road bike guys. A small attachment and CO2 cartridges to get you an emergency inflation of a tire to get home. Obviously you have to patch the tube first - but saves carrying a pump or getting stuck waiting for a shop to open to get air. Make sure to get the correct valve tip for your tubes. Most of these are for the narrow Presta valves. Get one that also does Schrader valves.

https://www.amazon.com/BriskMore-inflators-Compatible-Insulated-Cartridge/dp/B07351DLP9/ref=sr_1_3