Growing vegetables from food waste is a great lesson for kids and also makes great science experiments Teach students how to regrow food and pick a food to regrow as a class. Could use a food from a students leftover lunch.
I can do this with the Sharpie idea. Sharpie design on mug, bowl, plate, or any other oven safe glass object! 350 degree oven for 30 min, and there you have it! Instant art to display your tea + coffee + yummy food in.