Skip the fancy bento box. Buy tiny airtight containers.

There are a few lunch boxes with truly separate airtight compartments, but the easiest fix is to put chips in small airtight containers and drop them into whatever lunch box you already own.

Most compartment bento boxes aren’t actually airtight in each section. They have one lid and a divider tray inside, so the air in the chip compartment is the same air as the rest of the box. Chips go stale because air and moisture get in, and “leak-proof” is not the same as “airtight.”

The best setup is boring and works: use a small Rubbermaid Brilliance container or a Sistema Snack Stack pod for chips and crackers. Each one has its own real seal, so the dry stuff stays dry while the