I'm curious, what beyond simple everyday type tools do you carry, if any?
I'm not surprised if a 3/8" metric socket and screwdriver set are under the seat,
We mostly have the factory wrench/jack. Maybe a flashlight, tire pressure gauge

I have 11 pc 1/2" dr. metric deep impact socket set
Sears breaker bar/torque adapter ( I deleted the factory wrench & jack)
Assorted screwdriver set.
LED Spotlight & worklight. tire pressure gauge, manual
Mechanics gloves, reflective vest, warning triangle, rubber poncho

Galvanized drawbar, 1/2 & 5/8" locking pins
(2) 1 7/8 & 1 2" swappable trailer balls
standard spring safety pins
5500 lb, tow strap w/hooks
(4) 1500 1.5" ratchet straps
1 l oil & funnel, 2 l washer fluid
6 ton hydraulic bottle jack (I use a large screwdriver as the handle)