I once had a student who remarked, "We'll never use these," when we were working on some pottery in class. To make sure that this never happens, I always bring in some cereal and milk to celebrate a successful pottery firing. Froot Loops was the choice this time. 
Notice the color-coded Froot Loops in the bowl on the far right.
This is a picture of one of my freshmen art classes on the last day of school. The freshmen were the red team, hence all the red clothing.