I was thinking of creating a pack fortube etiquette it would include:
• Bookmark saying (“don’t read over my shoulder!”)
• Water to keep hydrated in the summer,
• Deodorant (or febreeze) to spray at smelly people,
• Plastic baby to roll up and pretend is real to get a seat,
• UV light to check seat for human fluids,
• A book (war and peace) for the long journeys (with bible slip cover to scare people away from you,
• Earplugs for the noise of the station/peoples music.
• Stickers to put up depending on your mood ("no talking", "Talking is not illegal" ext.)
All of it will be packaged as a tube safety kit and might look like this:

Or if that’s too big this:

what do people think?