Consider the following not mentioned above:
* Spare tubes in old socks. Reduces wear and tear rubbing around in the bottom of the panniers / handlebar / seat bags and gives a nice place to wipe grease from your hands.
* Medical information and insurance card (in addition to personal ID). Not really a tool, but critical in some instances.
* I, personally, like a full-frame pump. My Topeak Morph just seems to take FOREVER to pump up the 20x1.75 tires on my Bike Friday, much less tje 650Bx38's on my main ride. But many others are just fine with the smaller pumps. (And don't simply rely on CO2 cartridges. Not helpful once you've pumped the tire up 3 or 4 times searching for the "oh, god, not another one to find" puncture and you've blown :-) through all your cartridges. I do recognize they may be necessary for seating tubeless set-ups though.)

Do you have the road morph or mountain morph? If you have the road morph then that is the worng pump for such a wide tire. You need the mountain morph. It is high volume low pressure.

Thanks for the update, Spinnaker! I had overlooked that option.
Cheers!

If the pump can't be braced against the ground, then forget it. They now have diff pumps for diff bikes ??? LOL ALL Tires all have about the same AMOUNT of air. More volume = less pressure. One tube should be plenty, with SMP tires.
I'm not shy about carrying any and all tools on a long tour, even on day rides I carry most of them. My bike is old style IGH nutted, so I need a ton of stuff.
The most useful tool is the 4/5/6 mm 3 arm wrench. For actual bike fixing, I will NOT use multi tools. Those are for knives/ can opener/ pliers stuff. I carry spare spokes in my bike bins. I make sure all bolts are belt and suspenders, with a nylock nut.

You might want to take a look at the actual touring section of this site.

That said, for shorter trips I don't bring much in the way of spares, and it's mostly the same stuff I carry on regular rides. Three tubes, patch kit, a ton of extra patches, piece of old tire as a boot, loose allen wrenches, chain breaker, spare links, small pump etc.

On trips that are more than ~3 days I'll start carrying more stuff like spare spokes and a folding tire and the heavier items that aren't very likely to need replacing.

I personally can't stand cycling multitools - too much of a pain to use and really aren't much lighter most of the time.