Squid eye, natch. Am trying to find a suitable pic of Neville to paste into the pupil, but my icon-making skills are less-than-l33t, alas.

Looking forward to your challenge fic. Alas, I've already read through all your stories, and am looking forward to something new to swoon over. Most of your oeuvre is already firmly ensconced in my all-time favorites list. If I had to pick an especially-favored favorite though, I suppose it would be "A Spell to Turn Tigers into Butter." Erm, well, or your lovely riff on Hank Cinq.