Make replaceable protector patches for your otherwise scratchable LCD screens. I put these pieces of tape on my IPODs and Casio cameras and they work tremendously.
Step 1: Choose the LCD you are going to protect (in this case an IPOD Nano)
Step 2: Cut a piece of clear tape to fit. This brand of scotch tape is excellent.
Step 3: Place over the screen and stick down carefully making sure you get no air bubbles.
Step 4: You are done! simply replace when this one gets dirty / scratched.