A toothbrush, because t's a minor marvel.
A toothbrush, because it's so nice to scrub the teeth in the morning and make your whole mouth feel clean.
A toothbrush, because if you use a toothbrush and floss regularly, you don't need toothpaste (or at least *I* don't, according to my dentist).
A toothbrush, because when you re-purpose it, can become a kitchen brush, great for cleaning anything with small crevices and cracks: the rim of the sink, the threads of a dirty jar, the space between the buttons on the coffee maker. And another repurposed toothbrush works great in the bathroom.
A toothbrush, because what could be better for cleaning those canines?
That's all. I'm glad for toothbrushes.