I cut down old wine corks as caps. If it's a one pipe walking around town sort of day I just load the pipe up cork it and travel with it in my pocket with a tamper and matches. If I need to go indoors I cork it up and relight when I go back outside. I have a leather roll up tobacco pouch that I would add for extra tobacco and some cleaners if I was was going to be out all day.
Bearing the burden of responsibility..... It's probably my fault.
Treat your silver as if it were earthenware and your earthenware as if it were silver - Seneca, Letters of a Stoic