Come to think of it, I never played a full wizard. I had a chloromancer who was, surprisingly, a gardener, though another version had her as an eco-terrorist living of the land.
I have an NPC concept lying around nicknamed "the seamstress", who is a magically gifted assassin that can manipulate clothes with magic. She's worked as a tailor once, but assassination is far more lucrative. Though she doesn't kill with magic, of course, just uses it to get close to her targets.
And I had an apprentice wizard, but his job was being an apprentice.