It seems a lot of artists paint their breakfast. Still life setups that include fruit, flowers, cups and bowls, etc. It's a good practice. You learn about lighting, shadows, reflected shadows, color, temperature - the how to's. I think a chocolate cupcake that is so top heavy with frosting that it falls over, was a much better idea of something to paint. That's how I justified buying it. It does not have the curves of an apple but it tasted much, much better.
Top Heavy Frosting
6x9 pastel