What is your favorite starting household?

I usually start with 3 or so different household types but my favorite is to play a female child with an accompanying grandmother. Sometimes I include the mother who will form a relationship and move in with that sim leaving the child with the grandmother. The reason I even include the mother at all is to preserve the grandmother-granddaughter relationship. Anyway by the time my sim becomes a YA the grandmother has passed on.

I also like a single hetero YA female sim and or a household of YA sims and see what relationships form.