Must have spare Bravada parts in vehicle

I wonder what forum members think are must have parts and tools that they store in their Bravada at all times.

I store the following at all times in my Bravada:

Ignition switch- if it fails you can be completely screwed- can't even move the vehicle out of park. Easy to replace- just make sure you keep the proper torx wrench.

Alternator- very easy to replace and like the ignition switch- it can leave you stuck big time. The alternator in the Bravada is a common GM alternator- but they fail all the time. Easy roadside fix with a few open end wrenches and a 3/8" socket breaker bar to move the serpentine belt.

Don't forget to carry a spare serpentine belt too. When I changed mine during routine maintenance I put the old in with the jack. It came in handy later.