N.B.
J., I haven't had much experience doing the bento thing but I have been interested in it for a while. My daughter is two and a half and currently gets lunch at school but I found this terrific website for kids lunch: http://lunchinabox.net/
She gives tips about how to prepare things quickly, cost effectively, nutritionally and beautifully. Plus she has links to buying the different things you might need. She has lots of container ideas.
And lastly, have you seen the laptop lunch box? She has a link to it on the right hand side of her blog page. Very cool.
Hope this helps!
Good luck.
N.
A little about me:
Working full time, part time student, mother of a beautiful energy filled 2yr old girl, and married to my best friend)