Ok, after reading this I'm interested.... Where are these going to be uploaded to? If this site can't or doesn't want to host them. I can post them up on my site, vgmastersclub.com. If they are uploaded to a site like photobucket I can link them or I can upload them myself to host them directly on my site.
All the overlays would be amazing.. I'm thinking about the inlays I have. Colecovision (Including the extra super giant "Super Action" controller inlays as well), Intellivision, Odyssey 2 and Atari Jaguar... I didn't know that Atari 5200 had any.
As for how to do it easily, I would just go to UPS or FEDEX and print out/ laminate, then just cut them out. To me, it is way cheaper than spending money on printer ink, paper and a laminate machine.