tiktektak - I can upload a scan of a template I made, wouldn't be hard to make your own.
Grumbleduke - I am with you on this - I prefer to be able to quickly see my games, and I made a custom case for Salamander and did just as you described.
FellipeBr - this won't work for DS / GBA. These are using CD jewel cases, too thin to use for that.
BTW - if we started a a project for PC Engine games getting English spines / inserts, could we upload that somewhere?