Some circles produce compilation doujinshi of the anime fandoms that they draw. The majority of the content in these compilations are reprints from past work, but they sometimes sneak in a small story exclusive to the compilation release. So if you're a big fan of the circle and want to show your support, pick these babies up.
They are also a great way to get the older, rarer doujinshi, and since they're smaller, you can carry it with you easier. Did I mention that they're also way bigger in page count?
Sorted by Circle > Title
• Laugh-Rough
• Doujin Sakka Collection #40
• Ride on Shooting Star
• Sora no Sukima (Between the Sky): Bambi Takada CG Works