Spare parts list for off-road trips

After having a YJ on our last outing blow a rear driveshaft and watching the owner replace it with a spare, even drilling out the broken bolt and using an ez-out to remove it, I was blown away. Now I want to have a kick ass spare parts and tool kit that will only ride in the back when I'm on trips. Lets start a list of essentials and good to haves. Also, what u-joint do I want for the rear stock driveshaft? I also have an Adam's 1350 front, so I'm guessing I need a 1350 spare. What else? Finally, what's a good "crate" that will fit next my fridge? I have 24" by 24" to work with.

Essentials:

Nice-to-haves:

This has some good stuff in it

https://wayalife.com/showthread.php?t=39384

Thanks! The first pic is how my work bench looks right now! I'm working through updating my daily carry tool kit, and then making the augmented super-duty-off-road with spares kit.