Verbs/nouns make good last names:
Pierce Scarlet Storm Sparks Twig
Really generic stuff like Smith, Anderson, etc. can also work well if you're doing something paranormal.
My name is pronounced jha-VON.
behindthename.com is your best friend. use it. love it. i promise it will provide eternal salvation.
If you want something really creative, search Wikipedia for Russian names or Latin names of flowers...my pet Linneanum is named after a flower family, and they make really cool last names. Hope that helps.
"You're always talking about X but you're thinking about Y. Learn to talk about Y, forget about X. X is going to take care of itself." ~ Grand Canyon