Advice. What do you normally eat when travelling with a nut allergy?

I have a nut allergy and recently spent 3½ months travelling around Southeast Asia. I found it surprisingly difficult to find snacks | genuinely felt comfortable eating, especially when I couldn't fully trust the labels or communication.
It made me curious about how other people deal with it.
When you're travelling or away from home, what do you normally do for snacks?
Do you take your own food, stick to certain brands, buy whatever you can find, or just go without?