Mine is pretty bland. I have a rotation of many anime girls wallpapers, and an empty desktop, without any customization and a hidden taskbar. I don't really like thousands of widgets in my desktop, so this clean design works well for me.
When I was using Linux I used to rice my desktop, now on Windows 8.1 I didn't bother. Does
nanami-tan.info have guides for 8.1 customization?