Fabianh, you can go to your refrigerator and right click on the images of the rare items to save them, then use paint or GIMP or some image editing program. We're mostly just making them up as we go along (or at least, I know I am). I like the creative approach myself.
Which reminds me, I need to update mine, I've got 113 items total now (something like 8 or 9 of which are Co6's). Though I don't know if anyone ever updates this page anymore
