I've mentioned on my primary blog, Realmwright, that the real world is full of amazing inspiration. If you're ever stuck and need a wealth of ideas spoon-fed to you, just step outside. Sometimes you have to take several steps outside, putting one foot in front of the other, until you wander into a local library.
This particular post Alien Landscapes on Science in my Fiction makes a great point of pointing out how fantastic our own world can be. If you don't see it at first, look closer. Closer. Closer. Sometimes the images from an electron microscope can be quite awe inspiring, but I warn you, don't ever look at your own skin. It will keep you up at night scratching and scrubbing at the thought of all the little nasties that call your epidermis home.