For a journal-entry celebrating All Hallow's Eve, I wrote a few fics, including a Donald/Timothy ficlet. Details are below, and the story is in the link, embedded in my personal LJ.
The Don Strachey Mysteries (Movie 'verse) - Donald/Timothy -
Wearing the Family Colours for
tarlanx - A Don/Timmy fic in which Timmy wears a kilt, making Donald twitterpated.