Try to make the lunchbox full of colors and a little creativity may go a long way. Cute bento picks can be bought at kitchen section of department stores. We got ours from Landmark. Daiso and Japan Home Center sell them, too. Here's a list of picky eater-approved recipes you may want to try: http://www.parenting.com/recipes/picky-eaters
You will have to show your creative and artistic skills with the food here. I happen to come across this site, please see if there's something tasty as well as easy and quick to make. http://www.happinessishomemade.net/30-school-lunch-ideas-for-picky-eaters/
Try bento box presentation..look for ideas in pinterest..
Janice Virtucio-dela Cruz