Het for Hermione? Long-term preferred, but I'm happy to try it out short-term to see how the dynamic works.
A fun Christmas at Grimmauld Place. Something involving the Yule Ball or a Christmas party. Tensions running high in the common room/study session. A time-turner mishap leaves her stuck with the Marauders. Sirius returns from the veil and Hermione spends the summer there. Horcrux hunting. Hurt/comfort-ish for Draco. Any fix-it lines, canon divergent, character lives, or post-war lines.