vanilla chai from the bigelow brand has been my go to as of late, but i don't think it'll ever replace my love for a nice glass of sweet iced tea on a hot day.
there was also a peach tea i tried a few years ago from a brand i can't remember the name of, it came in a variety pack with other teas. it was the only one that stood out to me, and i find myself wanting it even now.
and, if instant tea counts... then that, too. it'll never be the same as boiling your own cup, but it keeps me hydrated when i don't want to drink water.