Etsy has provided a great variety of avatars, badges, banners, and button designs available to all members of the Etsy community. The selection includes avatars to use in your shop if you're having a sale, on vacation, etc. There are also badges for your blog to show Etsy allegiance. They even have a Bannerator, a dynamic shop banner generator.
Check out their full page of resources in the Etsy Team section of the site. Here are a few examples to spice up your shop or your blog: