Or, actually just a few.
Namely the one with Kislevite moustache, and anyone of the heads with braided hair and beards.
I'm also looking for the Middenheimer-sprue, but I can't justify buying a whole box of Knights just for that.
I have: Flaggelant-bitz, Black Orc bitz, anything Skaven, half an Empire Wizard Box, Skeletons and possibly some Beasts of Chaos models, including Characters.