Favorite non-perishable snacks to keep at work?

How long is your day? Could you bring a couple small meals instead of these snacks? I work an 8-hour day and don't refrigerate my lunches, and they're fine five hours after I made them. My favorite lately are wraps - My husband will grill up a bunch of chicken breasts on the weekend, and then I make myself wraps all week - chicken+bacon+lite ranch+lettuce+tomato; chicken+grilled onions and mushrooms or peppers+sprinkle of shredded cheddar; chicken+half an avocado+lettuce+tomato... I use lavash wraps (rectangular) cause I am inept at wrapping things in tortillas. You could cut it in half and only eat half for each snack if you like

An apple, banana, grapes, cherries, etc don't need refrigeration. I keep an apple corer/slicer at work (little $3 thing from walmart) just to make the apples more fun to eat. You can even bring yourself a little dollup of peanut butter to dip the apples in!

Those little cheese wedges - laughing cow - and babybel cheeses are ok out of the fridge for a bit too.

Also, an insulated, softsided lunchbox and a reusable ice pack will keep most other (actually) perishable stuff cold enough for long enough. I was putting chipotle mayo on a couple wraps last week and it was fine (and my stomach is one that doesn't tolerate food/milk that is even slightly bad)

I would get a freezer bag, like you had in elementary school, then bring in string cheese, fruit, hummus with sliced bell pepper.

I definitely stock up and keep containers of mixed nuts. Also, (and I think I might be the only person in the world who does this) I keep peanut/almond butter on a shelf at work and bring carrots in, 3-4 full size ones on a day I know will be long, and I swirl those around in the nut butter and chomp away, The nut butter fills me up, and the carrots add a satisfying crunch. I also keep raisins and sometimes I will bring a small crock of applesauce to put the raisins in. Microwave popcorn is another of my favorites and you don't have to eat the whole bag, since people will smell it cooking and you can give some away on the way back to your desk.

Fruity Pebbles Treats - Gluten Free Cereal Bars - 90 Calories - For a small snack these can be surprisingly filling
Nature Valley - Strawberry Yogurt Granola Bar - 140 Calories - Higher Calories, but deliciously worth it
Quaker Instant Oats High Fiber Maple & Brown Sugar - 160 Calories - I recently allowed myself Oatmeal again and I have been relishing in it.
Idahoan Buttery Homestyle Potatoes (in a bag, 4oz) - Gluten Free - 110 Calories - Yes, I'll eat the whole thing. I save it for those days when I'm so hungry I could smash holes in the walls. Sometimes I'll eat 1/2 the package and save the rest for the next day, but I LOVE mashed potatoes and they are one of my weakness foods.

dried apricots, almonds, granola to top yogurt with, trail mix clif bars and special k bars (these are only eaten when I'm absolutely desperate because I don't really care for them), mint tea...these are in my food drawer at work. Oh and whole wheat peach apricot bars (super hearty fig newton type things).

If I were you I'd be getting a couple ice packs and a little cooler to shove under my desk. Unfortunately non perishable also genearlly means fairly processed.

Have you considered bringing a weeks worth of lunches with you so you can grab and go as needed? All bagged up in individual servings in the fridge or cooler? I do that. Its awesome.

Healthy Choice has new meals with rice and a topping that you can get by the canned foods. All you do is add water and microwave. They aren't bad, just need a little seasoning.