I actually have a cool "other job" so I usually lead with that one.
Person: "So what do you do for a living?"
Me: "I'm a consultant for a toy company."
Person: "That's interesting, what all does that entail?"
Me: "Well my main job is flying airplanes and I mostly do the toy company stuff for fun".
Person: "That sounds like your living the dream!"
Me: "Yea, I'm exactly the person I imagined I'd be when I was 10."
There's some great ones on here I'll have to remember.