Application/attachment file icon set.

[bigwater]

I've searched for this, and know I can't be the only one who's done the search, but can't hit on an answer. One of my clients has an artist site that allows attachment file types such as .ai, .cdr, .eps, and other non-default filetypes. I understand the process of allowing a new filetype, but what's becoming a headache is creating a 16x16 pixel image to associate to that filetype each time a new filetype is added. He's up to about 16 different non-default filetypes now and for each one it requires taking the logo of the program and making an icon out of it so the users don't get a red X beside the file in the post. I know I'm not the only one that has gone through this. These icons have probably been created 1000 times before now, but I'll be danged if I can find a collection of non-default icons. Does anybody have a clue where to source these, or should I just keep making them myself?