I have a pretty solid tool go-bag that I've built up. But, honestly, it doesn't necessarily come on trips.
I've built it around the Milwaukee 15" Packout Tote. Why? Because I like the Milwaukee half packout carrier for their socket set. (quarter inch and 3/8 metric only sets in one set). A nice alternative is the CTA 10100 (
https://www.fcpeuro.com/products/eur...acturing-10100 ), which I've been thinking about as an actual trip kit. You don't need to add much to that CTA kit as a true emergency set.
In the tote, I carry these tools:
socket set (5mm - 19mm)
a few 3/8 impact sockets (17, 19, 21, 22, 24)
select extensions / wobble bars / impact swivel
smallish breaker bar / ratchets / t-handle
torx / allen / e-torx / stubby allen
combo 1/4" hex bit / drill bit set / hex to square adapters
wrench set:
https://www.craftsman.com/product/cm...ench-set-12-pc - this is actually rebranded FACOM. I honestly bought it more for the case, although the wrenches are pretty nice.
fan clutch tools (not useful for X5)
pliers
snap on PWCS7 wire stripper / cutter / crimp tool (it's bizarre that virtually no one else makes a crimp tool with the crimping end on the front)
panel popper tools
screwdrivers
dewalt atomic 20v 3/8 impact (lives in the bag) or Milwaukee M18 mid-torque if I think I'll need a little more oomph vs. size
milwaukee M12 fuel high speed ratchet
milwaukee M12 fuel 1/4" hex impact
12v power probe
tiny multimeter
supplies:
zip ties
box of assorted crimps
plug kit
electrical tape
Edit:
I will say that a nice go bag is great to have. I actually do a lot of work with it even just in my garage as it's easier to bring that over to what I'm working on than go back and forth to the toolbox. Working out of your go bag at least some is also really helpful for determining what important tools you're missing. I've done the same thing for household electrical work as well.