Looking for a simple example to learn and teach the Business model Canvas that is not too MBA like? Why not take something familiar like a library? Easy to map out but still very insightful. See the example I included below (as far as I remember it from when I was a kid in the Netherlands).
There are lots of ways to extent this. When you want to explore the commercial side, compare it with a book shop example. Or when you want to discuss the impact of technology, discuss how an e-book library would look like.