For Christmas I received the gift of time. Seriously.
My parents gave us an electric toothbrush. It's rechargable and has a two minute timer. I now have much cleaner teeth, because I'm motivated to clean my teeth for longer that I used to. But the best part is I've discovered that I can read a book and clean my teeth at the same time. So this gift amounts to not just better dental health, but four whole extra minutes of reading time every day. It all adds up.