I have a collection of about 15 clear CD discs, like the ones that come with CD-Rs, etc., when you buy them in bulk. The thickness of the CD discs varies (depending on the manufacturer, perhaps?), with some being 1mm and others 2mm thick. They're great for drawing on, and could be used for crafting... If you're interested, let me know. I'll send them in a case that fits them perfectly.