Reddit mentions of Wild Garden Hummus to Go Traditional, 1.76 OZ (Pack of 10)

Vienna sausages? Or the jarred meatstick ones for toddlers? Potted meat? (All not my personal taste, but maybe ok in a pinch?)

I've noticed a lot of basic burrito wraps last forever in fridge, and stores have on shelves. I think the cheaper ones are loaded with preservatives, but could work if you check and swap out. Add some peanutbutter pouches, condiment pouches to make "ham salad", and he could have simple sandwiches.

Tasty Bite Indian meals are pretty decent, shelf stable, and soft. I've also seen shelf stable hummus, in little aseptic triangle shaped individual cartons, if he'd eat that.

Edited to add hummus: https://www.amazon.com/Wild-Garden-Hummus-Traditional-1-76/dp/B000V5IMSQ

What about cheese, like these?https://www.amazon.com/GoPicnic-Copper-Cowbell-Gourmet-Portion/dp/B00CN502H6/ref=sr_1_2_a_it?ie=UTF8&qid=1504025879&sr=8-2&keywords=Asiago+cheese

This hummus is pretty decent and already prepackaged and shelf-stable https://www.amazon.com/Wild-Garden-Traditional-Hummus-Dip/dp/B000V5IMSQ

Yep! Here's one brand, it's also in the GoPicnic meal boxes. There's also this brand which includes crackers.

Check out wild garden hummus- they have individual packets that don't need to be refrigerated. I've found them at my local grocery store (Hy-Vee and World Market).

http://www.amazon.com/Wild-Garden-Traditional-Hummus-Dip/dp/B000V5IMSQ

Shelf stable hummus! Not as good as fresh Hummus... but it is protein, and delicious. You can buy some avocados, tomatos, and grow sprouts(super easy). All of them don't need refrigeration. Make a mean veggie-head sandwich.
http://www.amazon.com/Wild-Garden-Traditional-Hummus-Dip/dp/B000V5IMSQ

Also You can get those tuna bags that come with stuff to mix in them.