In a recent blog post, Jeri Dansky says:
"While lazy Susans have long been used in the kitchen, I'm seeing some new twists. YouCopia's 11-inch Crazy Susan turntable has a shelf that slides out to make it easier to reach things in the middle. (The 16-inch version has four shelves that slide in and out.)"
Read more about Jeri's take on lazy Susans for storing all kinds of items.