My daughter. Just seeing her happy or watching her discover something she loves. I know it sounds super cheesy to say this but she is just the most amazing gift.
I also love my cat and he's such a comfort to me. He is getting older and I've been thinking recently about how he's definitely in his later years, which really makes me want to enjoy him as much as I can now. He has now been with me for more of my adult life than I lived without him, I really do think of him as one of my dearest friends.
Also: art, a good book, doing yoga and then taking a hot shower, days where I'm mostly pain free