>>2861548I'd add the Haruhi theatres (I think you can find a link in the comments sections of bakabt, in the LN torrent), the short story random numbers and at least a mention of the three anthologies, though yen press published all of them in one. Plus the misfortune of kyon and koizumi.
Other optional would be the official games
http://haruhi.wikia.com/wiki/List_of_Haruhi_Suzumiya_video_games 