I am the Kat that Walks By Itself

Argggh! I feel as if I have hit a creative wall with my (digital) art. Everything I have done for the past... week? ... I have looked at, felt totally indifferent to, scrapped, and started again at zero. I need something new, some new approach. Like what I did with my "Elements" series, that was a nice challenge, doing electron-shell diagrams as stained-glass windows. But I've done that now, I could do stained-glass windows in my sleep (not really), I want something new, but I don't have a clue as to what.

Help! Please, ideas? Techniques?