Aww... I enjoyed the "Fair Wind" doujinshi... they were so cute! <33 Unlike most of the doujinshi I have read, it actually kept to the true nature of the manga... it seemed like something you might actually see in CCS. Particularly considering how much their artwork resembled CLAMP's! (I wish I could do that...) And I liked the fact that it didn't all focus on the relationship between Sakura and Syaoran... it also included Tomoyo (and her unrequited love), and the relationship between Touya and Yukito.
To be honest, when I was a fan of CCS many years ago when it was first released, I wasn't fond of Sakura and Syaoran together. But ever since watching/reading Tsubasa, and looking back on CSS, I now actually find them to be very adorable together. *^^*
Most of the CCS doujinshi I've found are very sexually explicit... and considering most of them involved the characters still as children, I found them to be rather disturbing. ^^; Some of them even included sex between Sakura and Touya or Sakura and her father, and... that's just wrong. o.o; Very wrong. So, I eventually decided to avoid CCS doujinshi, since the majority of them seemed to be like that. But these were very cute and refreshingly innocent.
;; I'm interested in doujinshi focusing on the relationship between Touya and Yukito, but I've only seen a couple. They seem to be extremely difficult to find. =/