When I get stuck in a creative rut I generally change gears and throw on the technical hat for a while.
I don't know your level of expertise with the unit, but here are some suggestions that will actually serve you pretty well once you get out of the rut...
- Learn how to backup and restore your patches to the computer.
- Get Cakewalk set up to send the GT6 patch change commands so you can embed those in a midi track in your project.
- Figure out how to save the patch data in your project so the sound you used is saved with it.
- Check out the various GT6 boards and see what crazy stuff people have gotten them to do. Bound to get an idea or three there. I have seen some very creative use of the ctl and expression pedals from folks on those boards...