Well, for me and my Burb, I have a ziploc bag in the passenger door pocket that has the wrenches for the battery terminals and the torx screwdriver (T20 I think) for the distributor cap and rotor screws. Screwdriver just the right length to fit in the firewall dimple.
In the .50 caliber ammo box in the cargo area, there's more styles of flathead and Phillips screwdrivers, and 1/4" and 3/8" Craftsman ratchets. Extensions, deep and shallow sockets, pliers, etc.,all organized where I can (usually)easily access them.
Also in the back, next to the box, is the long 3/8" drive pry bar for the belt tensioner, a hammer, a rubber mallet, a thin Vaughan Superbar pry bar (gets in tight places and I can lean on it cause it's American made good steel). Telescoping lug wrench in its case, and the Craftsman 4 way lug wrench is under the spare tire cover. Right now there's a plastic bucket back there too with some other tools that I've been carrying. As for parts, right now, just a spare belt. Duct tape and baling wire of course, still a few things you can fix with them.....