i've got a pretty typical tool bag i throw in all my vehicles.
it starts with a simple bag
https://www.harborfreight.com/tool-s...ets-61168.html
then 1/4 and 3/8" sockets
https://www.harborfreight.com/14-in-...-pc-62303.html
https://www.harborfreight.com/38-in-...-pc-61954.html
always a volt meter to troubleshoot electrical issues that arise
https://www.harborfreight.com/electr...ter-63759.html
a multi-bit screwdriver or two
https://www.harborfreight.com/4-in-1...dle-61988.html
wire stripper
https://www.harborfreight.com/7-inch...ter-98410.html
wire cutter
https://www.harborfreight.com/micro-...ter-90708.html
and some e-sockets for the seat bolts.
https://www.harborfreight.com/14-in-...-pc-67898.html
i also throw in a butane soldering iron, some solder, and a handful of zipties from my garage mega-bag as well for good measure.
https://smile.amazon.com/Soldering-M...NsaWNrPXRydWU=
https://www.harborfreight.com/11-inc...100-34637.html
this covers just about anything that is roadside-fixable for me at least. anything that needs more likely isn't much of a roadside fix anymore.