When you're in the mood for a bento box and work close to Centennial Place like I do Umi Sushi Express is the place to hit up.
They have a special beef or chicken bento box for 8.50$ (around there) that comes with a generous helping of rice, your choice of beef or chicken, edamame beans, california roll (I think) and vegetable tempura.
Cook makes the food fast so that you can tame your hunger, the portions are perfect and by the end of eating it all you wanna lay down on the sofa / bench / chair / sidewalk and just take a long nap.
If you hit up this spot after 2:00pm I believe all the sushi is also 50% off.