Chris, for the other platforms there already is alot of the work already done, all you need is photo paper, and for some games some universal game cases. Here is some stuff I did:
And here is where insert graphics can be found:
http://www.thecoverproject.net/index.phpYou will find a Turbografx section there, but they use DVD cases (which I don't really like). I like what we have done on this website. One consideration is contributing what we have done here and putting on that website.
Oh by the way - this has been on there for YEARS and I have never bought something from ebay that had a cover reprinted from this website.