So, I decided to take these from my tumblr and publish them here. They are little snippets that the movies don't really have time to show. They are mostly canonical, or something that could have easily happened without changing the story.
This is shortly after ANH, from Luke's POV
It's cold on Yavin.
It's something Luke only really notices three days after the battle, after the adrenaline and the euphoria finally ebbs away and everything settles in.
It's cold. And wet. Luke generally doesn't have a problem with wetness, he is, after all, a child of the desert, he knows, in a way he suspects many here don't, just how much water and wetness is tied to life, how wonderful even one drop of water can be when one has traveled through long stretches of dry, hot sand. It's just... it feels strange, alien, somehow, to be surrounded by it, to be around people who accept water and the cool wind as if it's something natural, something that can be taken for granted.
Aunt Beru always said that water is a gift of the goddess. It's all Luke can think of when he sees Wedge leave half of his water, when they wash the X-Wings with real water instead of sonic waves, when he realizes that there are water showers here. Water is a gift of the goddess, and it should not be wasted.
Uncle Owen would have been more comfortable with this, probably, but then Uncle Owen was never quite as religious as Aunt Beru, never quite as tied to the desert. He was no child of the desert. Uncle Owens family had always been free.
This is another strange thing. Nobody here cares for the status of a person, nobody even seemed to realize that there are, in fact, still slaves in the galaxy. Luke is free, he has always been, just like Aunt Beru, but there are not... they are the freeborn children of slaves, raised in the desert culture of Tatooine while always knowing they are free, always being aware of the distinction, the fine line between free people and slaves. They are free children of the desert.
But Aunt Beru is dead, and so is Uncle Owen. He can't really process it yet, still wakes up sometimes expecting to see them in the kitchen, hear them shout for something. He gave them the funeral rites. Typical Tatooinian, which was difficult on Yavin, because there are no deserts here, but he managed. He's not sure whether giving Uncle Owen the desert funeral rites was right, because Uncle Owen was no child of the desert, but it's the only way Luke knows, and it felt right, so there's that.
Luke can't return to Tatooine, that is obvious, and he doesn't really want to, either. Tatooine was almost prison to him, a place that held him to close, to hard, that offered no change and no future. Yavin does. Yavin offers X-Wings and Leia and Han and Wedge and the other pilots, it offers adventure and friendship and a chance to change the galaxy. It's everything Tatooine was not, and at least for now, that's a good thing.
It's cold on Yavin, especially for a child of the desert. But Han offers to turn up the heat on the Falcon, and somehow Luke thinks that he might someday get used to it.