Carving a donut for practicing knife techniques. Why not? I gave it a try, and there is the opportunity to make and practice the three different knife cuts that were previously shown. In fact lots of opportunity. But it's fun, because when you are finished, you have a donut. Depending on how well your donut looks when painted; I can think of some real fun to be had with it. Course you'll notice that I like frosting on my donuts.