Here's an example of how you can use similar ingredients to create two different bento looks - the cute and the more serious...
Firstly, the more serious-looking bento contains teriyaki chicken, zucchini fritters, along with a plain rice onigiri, blanched haricot beans, cherry tomatoes and baby corn. The little sauce container has some tomato sauce for dipping the zucchini fritters.
Now, taking those ingredients (and substituting the haricot beans for some rainbow sweet n spicy peppers, we have the second bento:
The plain rice onigiri has been moulded into a heart, and the fritters have turned into a dog, with the help of a nori (seaweed) face and baby corn ears. (There is a lack of green here, as I ran out of haricot beans, and had to use sweet peppers instead.)
This is another reason why I love to make bentos - there are endless design possibilities :)