New Tube
Stick-On Patches

Patches cannot fix some flats. A hole at the stem can only be fixed with a new tube. Multiple flats can only feasibly be fixed with patches as I don't have the room for mutiple tubes.

Glue tubes glue themselves shut after being opened so I stopped using those. Previously patched tubes sometimes go bad in the bag so I don't use them as a backup either.

If I'm using my bike for transportation to a certain destination, and leave it locked up outside, I won't carry anything - rely on cell and uber/taxi to get home.