Most of the home screen replacements out there are just variations on a theme. There are scrollable panels, icons, and an app drawer. Foneclay is something entirely different. With this app, you can turn your phone into functional, though bizarre art.
The app itself is essentially just a front end for downloading and installing the artistic home screen apps. Tap on one that looks interesting, and you can preview the UI before you download. Each home screen is installed like any other non-Play Store app from system dialogs. Some of the options are more impressive than others, with animations and really cool art.