This is a really bad picture but doing Candy Sushi is a really fun program. Just make a rice crispy treat mixture (follow the directions on the box) and wrap your mixture in fruit roll ups. You can use licorice in the centers or some other kinds of candy or fruit snack. Roll it up and slice like regular sushi. Get some chopsticks and the teens will love you! We added swedish fish for the tops of our sushi.
This was a big hit. It takes a little time to assemble the ingredients, but this is another food program that you can do with just a microwave. You can make it more of a library-esque program by doing a handout about sushi, you could have real sushi for them to try, have books out about sushi, whatever you want.