So I think I've got a plan.
We've gotta keep it inexpensive for now, so we'll paint the walls and the cabinet. This weekend, I'll pick up a plain mirror at Ikea, and if they have an interesting simple shelf to put below it, I might do that.
While I'd love to be able to switch out the light fixture and the countertop (and the cabinet for that matter), it's just not in the cards for now.
And I managed to pick a wall color that didn't make my husband nauseous. Check it out: