Hahaha!!!

You gotta love Sirius! But the cheap hair ties from Petunia was expected, if not slightly childish on her part.

I love that Lily got the necklace and watch which were very approproite since the Lily is the flower of immortality.

Good beginning, I'm still laughing about the Lion's Roar in a box. 

Bad dog!

But cute as well. I like the foreshadowing of a relationship between Lily and James when he defended her against Snape.

Of course, Sirius would be just the kind of randy boy to time it perfectly to walk in as the girls are getting dressed, but then again, he could just be really lucky. 

You simply have to love the interesting relationship these people have.

James seems to have 'embraced' the situation quite willingly, don't you think?

Your description of the Head students room is quite nice, and certianly makes it an inviting place.