I'm going to try to focus this on stranger items, favorites, and items I've got that I haven't seen much (if at all). More normal items do get attention! Just... not quite as much. When I have my camera and my stuff in the same place, I'll be taking pictures too, don't worry.
Setsuna is... not my favorite character by any stretch but ninety-five percent of AS merchandise in general (and therefore, most of what I have) features him. The stuff that doesn't is a little harder to find, but can be neater, in my opinion.
Setsuna CD case-- There are several of these, but they were for individual CDs. This, though, has space for about fourteen or so. Setsuna design is from a chapter cover illustration pretty early in the manga, making this an older item. (
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Setsuna pen and Sara mechanical pencil. Weirdly his head isn't as chibified as hers is! Er, could possibly be a pencil, since mine hasn't been opened. I know that Sara's is a pencil, though, because you can hear the lead move inside. I don't think there are any others in this set, at least not that I've seen (but judging from the age of artwork, my best guess is that if there are any more, they're probably of Kira and/or Kurai).
Setsuna-with-an-enormous-gun wallscroll-- I used to have this hanging at one of my dorms. It's a nifty image but it does beg the question of why he's... even carrying the thing.
Kira/Setsuna mirror-- It cracks me up endlessly that despite the main couple series-wise being Setsuna/Sara, they ended up completely shafted in the 'shippy merchandise department in favor of Setsuna/everyone else. Not that I'm complaining, mind. Besides, Kira'll be a great boyfriend... until Setsuna ends up in Alexiel's body. At which point the breakup is inevitable. This was a zenin item from Hana to Yume's 25th anniversary Summer Festa.
Elemental Angels/Setsuna-Katou-Kira clearfile-- These are probably my two favorite images from the series. Probably because the way the elemental angels are posed looks eerily similar to the Addams family in the opening (I'm thinking Raphael is Gomez, Uriel is Lurch, and Michael and Jibril are Pugsley and Morticia, respectively). Their total lack of happiness at being so close to each other is hilarious.
On the other side, Katou is contentedly chewing on Kira's sleeve. Kira looks suitably mopey at this development, but not mopey enough to keep from putting his arm around his old, semi-dead buddy. Setsuna, meanwhile, remains perfectly oblivious to the homoeroticism right behind him. See, it's all very in-character. ... Anyway, as far as specifics on the item itself, it's semi-transparent and again was a Summer Festa item.
Setsuna and Sara and Rosiel pencil bag-- No, I'm not kidding. Worse (or better?) they're chibified, and this item was obviously made during Sara's stint in Jibril's body, since she's got her hair short. This thing is mostly pink mesh, and cracks me up because it's hard to imagine Setsuna and Sara looking even halfway placid with Rosiel only a panel away.
Setsuna/Sara, Rosiel, and Raphael/Michael CD cases-- Augh, these are ridiculously cute. They came in a set, luckily!
Rosiel/Setsuna poster-- Also known as one of a dozen Kaori Yuki tributes to that infamous rose scene in the Utena movie. Well, not really, but still. There were several of these from different series that ran in Hana to Yume, everything from Yami no Matsuei to Godchild to Fruits Basket had at least one poster in this size and style.
Setsuna/Sara and Kira/Setsuna mugs-- Finally the official couple gets a tiny bit of love from Hana to Yume's merchandising department... and Kira/Setsuna does, too. These are both images from the early manga that later ended up in the first artbook.