Just Bento is having a fun course on making bentos. The first assignment is to make a list of packable foods, divided into food types. I actually have a huge list of foods that I'd typed out awhile ago, but I decided to simplify it for the sake of fitting it on one page. I admit everything is not technically "bento-friendly", but I pack mostly stay-at-home boxes so I cheated a little.
You can find the blank chart and assignment info here: Just Bento Assignment 1