I'll do just about any random thing to come up with lesser-character names. I've grabbed whatever book was within reach (quite often it's non-fiction) and used part of the author's name or a character name or opened up the paper and grabbed a first name or clicked over to a news website and used a name from a by-line. I only get first names this way, so I'm not actually using someone's name. I do tend to get last names in the same general way, but I've looked up surnames of a certain nationality or ethnicity before (I looked up Creole last names not too long ago).
Sabra: Mama to Bobbie (3/02), Linda (1/04), Esther (10/05), Marie (11/10), Douglas (11/12), & Psalm (09/14; in Heaven)