Made for fun.
With 1 Singular Layer, just to show the power of Layer Styles: Adobe never developed them since the CS version came out, and it's a shame because they're the most powerful and time-saving Photoshop Tool, and they've a lot of room for improvement.
If you're curious and want to try these Style out you can find them and Download them at Dribbble (the psds are attached)
Another Example