Brakes: I would perhaps bleed the calipers to get some fresh fluid in, if not done in last 6 months.

Engine Oil: if close-ish to your interval, do it pre-trip.

Diffs: same as engine oil, if close c9nsider pre-trip. Kind of depends on how hard you’ll be using the truck for those 1k miles. Ideally you’ve already changed front and rear diff oil once already?

Trans: I do 40-50k drain and fills, I don’t consider it lifetime. Not flushes, just drain and fills.

Spare tire: yes check air, also test out that you can lower it, make sure the mechanism is not rusted in there.

Coolant: top off the expansion tank. If you have never drained the rad and block, perhaps drain those if it’s been in for a few years, just as good preventive maintenance, but not needed until 100k per Toyota. Personally, I do mine every 50k, with long term water pump and head gaskets in mind.

Light bulbs: check the external lights?

Wiper blades: old blades suck

Serpentine belt: if your over 100k, have you changed this yet? Might not hurt to do that now.

Hope that helps 👍