We decided to start with a new shock guard for my XR650R. Robo-Boogie made a really nice carbon/kevlar one for his CRF250X a while ago. It's held up really well and looked like a pretty easy part to reproduce, so it was an obvious choice for my first project.
The shock guard that I took off my bike is on the left and the new stock replacement shock guard that I purchased is on the right. Back tire just shredded it, so had to keep trimming it shorter.. and shorter.. and shorter.
Here's a pic of the carbon/kevlar shock guard that Robo-Boogie made for his bike, and you can see the ratty old shock guard on my 650 in the background.