The PWAC kids get their familiars, starting with Simon (part of my PWAC series).
Remus's daughter, Celia, is eleven years old, and she refuses to take her Wolfsbane potion. Can her Uncle Severus convince her that it's necessary? (Set in "Parents With a Cause" universe, which is a crossover universe between NCIS, House, MD, and Harry Potter. This one is almost exclusively Harry Potter, though, with a slight NCIS mention. Can be read as a stand-alone piece.)
This takes place in my "Parents with a Cause" universe, but can be read as a stand-alone piece. Introduces original character Brinley in Snape's household.