So, I think walking is one of the easiest and most universal answers, and I agree. But also, may I suggest live music. Even if it's not amazing or not something you'd otherwise choose to listen to. Just something about hearing it live, feeling the thump of the drums and the reverb of the bass in your chest, makes the world all right again for the length of the song. (Wear appropriate hearing protection, kids. Tinnitus is no joke.)