-Real Family fics. As you might have guessed from the stuff I write, I'm in love with the idea of found family fics. Try saying that five times fast.
-Frankly, and it's not that easy to find, solidly written and well-characterized Gen crossover fics.

Vathara (http://www.fanfiction.net/u/77482/Vathara) has great crossovers. She is one of the few that can throw in a bunch of fandoms and have everything make sense. And has a few 'real family' fics.