1. Bringing cake in to work for no reason and watching people's delighted reaction.
2. Related: Cream cheese frosting.
3. Making someone genuinely laugh with surprise.
4. A birthday balloon that just refuses to deflate.
5. Kitty eyes squinting up at you when you turn the light on in the dark room where they were sleeping.
And, with that, I'm off to bed. I'm tired tonight so I'm going to go to bed early. For me.