Be glad this is a guide and not an infomercial; were it the latter, you'd be bombarded with images of how awful your life is without a outside, and even for storing hobby items and tools.
Kitchen Uses
If you took Shop class in High School, it's a good bet you had to make one of these babies. They're basically ball bearings, for a less wobbly rotation.
Other Uses
All that sounds nice, but what about some other uses for a lazy susan? You could keep a messy salt with a lazy susan.
