As a parent, you have to love IKEA. Drop off your kids to play while you find your way through the maze of goodies relatively unencumbered. As a retailer, you have to wonder if this could work for you. In the spirit of McDonald's classic PlayPlaces, IKEA has found that the investment pays off. Parents buy more because they're happier and free to shop. They even feel obligated to buy more in return for the childcare service. On the way out you can also grab lunch for 2 for under $10. Every time you leave the house with kids in tow, it's an adventure. By serving every part of the adventure, IKEA gets more of my dollars.