Lunch for an 11 month old?

What's a good lunch for an 11 year old? My son isn't really a picky eater at all. Today he had some strawberries, a small jar of baby food and some cheez it's for lunch. I need new ideas. Some days I give him a few vienna sausages but I know they're not so good for him. Those are like a once a week thing. He's not a fan of beef stew or broccoli. Those are about all he won't eat. Any suggestions?