Find your tribe in a Sea of Creativity
The idea of when the GAang is grown up and they all have little mini-me's running around, they still hang out a lot so their kids are all friends.
Like imagine all of them running around the Fire Nation royal palace giggling as they play tag and none of them are scared of getting in trouble for hiding in closets or behind tapestries or running circles around their parents as they try to get away from whoever's it, or them having snow ball fights that always end with them under a giant pipe of furs while in the South Pole.
I saw this tiktok of a little boy hiding under his mothers dress to get away from his dad or something, and I can't stop thinking of Izumi running to Fire Lord Zuko and hiding under his robes just before Kya (who just got tagged) runs into the room and asks Zuko if he's seen Izumi and he just shrugs and says "I think she went that way" as his daughter holds back giggles.
Also, Tenzin is the kid that cried when he got out first in a game.