Now, on to making the desk all shiny.

"Poliotus," Ryan said as he moved his wand in an S-shape over his filthy desk. The top looked slightly shiny but not quite as shiny as some of the other students. He contemplated doing the charm again but that would require more work...and he hated work. Grudgingly, he picked up his wand again and, moving it in an S-shape, he repeated the spell, making his voice more forceful. "POLIOTUS." It had worked; he could now see his reflection on shiny surface. Proud of himself, he looked around to find other places that he could tidy with the new spell he had learned.