GORP! Okay, its a lot like the granola, but kinda sorta different? Hard cheeses will also last a full day or more in your bag if you forget it overnight. Ditto for veggies like carrot sticks and whole hard fruits...

I really can't think of much that you would cook that would last well forgotten in a bag. I have the same issue, so generally if I put it in my workbag it has to hold up!

Luna bars? Not much diff from granola but portable with protein.

Most of these are ok unrefrigerated for most of the day, or bring an ice pack:
Greek yogurt
Cheese and crackers (pre-wrapped cheese sticks for convenience)
Hummus and crackers or veggies to dip
PB&J (or some other nut butter) on hearty bread
Nuts
Fruit leather or dried fruit
Home made trail mixes of some combination of dry cereal, nuts, dried fruit, etc
Clementines
Soup - either make a big batch and freeze, or look for ones that aren't heavy on sodium and sugar. TJs has some lower-sodium ones in tetrabriks.

Due to lifestyle and kitchen access constraints, I just don't have time to cook that often anymore. So, if I'm not eating a heated up meal that I previously made, I live on granola and almond milk, with a few bananas thrown in for good measure

I need other "instant foods" that aren't going to break the bank, or rot in my bag by the time I get to eat them (maybe tmi, sorry.)

I do have access to a full kitchen, so if you think of something that I can make that last a long time, or is portable, just let me know!

p.s. i don't usually eat meat, so it's gotta be veggie please

TIA