I'm still looking for a use for S biners. I have a couple, bought on impulse because, well, they are cool looking. Unfortunately, they are steel, heavy, and aren't rated for very much weight, at all.
I do like the small 9's, and found at least one application for small biner 9's.
I can get some S biners here. What size do you want and how many? Bass Pro Shop has tiny plastic ones that are pretty neat. Overall length is about 1" or so. I'd be happy to get you some and send them to you.