I think that this is a great site where we can share our Obento ideas. I am half-Japanese and to me Obento means love. To have our moms make our lunches for us was just too wonderful.
Now that I am older I make Obentos for health and mainly weight control. Of course it is also cost efficient as well.
My Obento is very simple. I do add some cute things but no food art. I preplan a little bit but for the most part I do not spend over 15 mins in the morning to prepare a healthy breakfast and lunch for myself and family..