Botspot's collection of 14 Windows screensavers that run well on Raspberry Pi.
If you don't have Wine installed, this app will install it for you.
Once installed, you can launch Botspot's Screensavers GUI from:
Menu -> Preferences -> Windows Screensavers.
To run in terminal: ~/Screensavers/gui

In addition to the Windows Screensavers, Botspot's Screensaver GUI also allows convenient installation of GPU-accelerated Xscreensaver, preset to enable the best ones out of 230 screensavers.