I used to do work on Caltrain, which used to be like 3 hours of my commute and didn't have any internet, so I would carefully plan what I could do beforehand. My code deploys to a machine that's very different from my laptop, but I had a Docker container set up to cross compile things and loaded up the docs beforehand, so as long as I planned out what I wanted to do.

These days Caltrain is faster and has occasionally frustrating, but fairly good Wi-Fi, so now my constraints are that I don't have a large monitor but not really much else.