Yeah, there are, um, lots of them. You can read some of their stories before they hit the "peal" as self-contained AUs, if you want - just go to the first instance of a new "symbella" in the index (except for the lower-case omega, that's a special case), and read only posts that have no other symbellas. (Some posts have no symbella and these are usually part of the same story as whatever's closest to them, it just means the relevant Bell isn't present in that particular thread.) These will sometimes cut off kind of awkwardly, of course...