This is my (as of now) newest design--and one of the ones that Robin will be turning into a cool screenprint on t-shirts and napkins and other fun stuff. In the meantime, however, it's also available as a print or magnet in my etsy shop--if you don't see it right away you can click on any print or magnet that is the size you want, order it, and just note that you want the fat black cat as your design in the "notes to seller.
Or you can find it on a whole bunch of goodies with your own customizable color background in my zazzle shop!
(EDIT NOTE: This post was edited to remove the PayPal buy direct button on 3/30/10 because I get notices more consistently from Etsy when a purchase is made an an issue came up when someone tried to buy direct via PayPal. Until I get that issue sorted I'm keeping everything going through Etsy for my handmade stuff).