Sure you could probably pick up a pleather case for nearly any electronic device you own, courtesy of eBay and healthy international trade routes, but it would lack the charm of a hand crafted leather case. There is an excellent tutorial over at the DIY blog Instructables on how to make a molded leather case. The tutorial details how to make the case for an iPod, but the molding technique is valid for anything you'd like to mold a case for. The required tools are minimal and inexpensive, for their sample they bought leather scraps off eBay and made their mold out of dense chipboard and tape. For another interesting DIY case idea, check out how to make a laptop case out of floppies.