Most canon-friendly gapfillers

[natkinnat]

Hello, I'm looking for gapfiller fics that are so canon-friendly that could easily be a part of the original story. I know that there are a LOT of stories that would qualify, but I'm looking for most outstanding compatibility.

UPDATE: Suggestions from the comments:
Some are better than canon
* Gapfillers with presequel by Morpheus. The post-seasons fics are AU though (because of "when" they were written).
* Gapfillerpalooza by severina2001
* Gapfillerpalooza by twistinside82
* Missing Moments, by InconspicuousBunny
* Gapfillers by Erin
* Ethan's qaf fiction PDF file