Its amazing how quickly you can settle into a rut. I have found this with the way I've been designing sites. You start to like a certain look, and before long everything you're doing looks the same. To try to get myself out of a rut, and to challenge myself creatively, I decided to build a 'conceptual' site - i.e. its not 'live' but its a trial site that gives me some practice in doing things differently.