Etsy is awesome and I like the moderncat.net website, too. It always features cool cat stuff that is hip and modern and doesn't have "crazy cat lady" written all over it. Thanks for sharing the link, lovinsphynx!
For those of you who like modern-style pet products, you need to see this site: www.petego.com
All of the pet products there are from Italy, so you know it's got some style. However, most of the products on that site aren't cheap; still, it's fun to "window shop".