I'd work at a daycare center.
But not just any old daycare center.
I'd take my post at the daycare center on Route 34, Johto, right next to Goldenrod. Not just to get to see Pokemon hit on each other, but because I get to chill with my wife all day, everyday, and I pretty much don't have to do squat except retrieve eggs every now and then and give 'em to trainers. I get tons of cash just by waiting for trainers to come back, and the longer it takes them, the more dough I rake in! I live right next to Goldenrod too, an awesome place to be, without actually having to live in the congested urban area. There are even security guards running around outside 24/7 to make sure nobody breaks in! It's awesome!