Instilling a strong work ethic by example (Busting your ass, always working/traveling) will do wonders for the kids in the sense that they know working hard rewards and their family works hard. Next, don't spoil the kids and hand them anything and everything they want.
Since I saw hard work paid off and I wanted things, I knew I needed to find some sort of workto make this work. Well, I had to be at least 16 to get ajob so I began finding a market on games I played and began selling currency for $$$. Later I found out my whole highschool wanted to buy drugs so I decided to fill that niche. (That's neither here nor there)
Basically, "force" them to figure out how to get some money for something they want, and I strongly believe they will have the hunger to figure out the entrepreneurial spirit on their own.
Cliff Notes:
1. Show hard work pays off by setting an example (Busting your ass at work/traveling/getting promotions/owning own business AND doing well in corporate, whatever it takes)
2. Hope that #1 will help create a good work ethic in your child because that's the uiltimate goal.
3. Do not spoil them and don't be afraid to say "Nope, but if you have your own money you can buy that." Hint at "getting a job" or "Start up your own lawn mowing/sweeping/cleaning/snow shoveling/etc biz"
4. Hope that through example and not spoiling your child, they begin to see that hard work pays off and they have the hunger to bust their ass.