God's green earth, underneath, is made of some beautiful stone. I think you can let your creativity flow by mixing different stones of different substance. Then mix polished and unpolished. Then mix different size tiles and different shapes and different orientations.
Sure you can surf. You can go to the library. You can visit tile stores. All those may be inspiring. One additional idea is to talk to an installer about his ideas. Sometimes he may have "that thing I always wanted to do but haven't found the right spot yet."
And professional interior designers are an excellent path also. Good luck.