Get the Monbento Mini.

Monbento Mini is the best small bento for adult light eaters — it’s 400ml, feels properly made, and doesn’t look like a kids’ lunch container.

Most adult bento boxes are 700ml to over a liter. That’s fine if you have a construction worker appetite, but for a light lunch, you’re just packing a lunch you won’t finish. The Monbento Mini splits into two 200ml layers, so you can do a little rice, a little protein, a little veg. It’s microwave and dishwasher safe, and the elastic band holds everything shut.

If you don’t want to spend that much, look for an unbranded