Google Sites is a popular free website tool. It has a built in icon that you need to change. Here is a great quick and informative video that shows you how to make this happen. Feel free to use the tools on FaviconBlog to make your own custom favicon. The tools are in the sidebar.
Enjoy the video!
-Loren
Google Sites supports the ability to quickly (and easily!) add a custom Favicon. This video shows you how! siteshelp.kccloudsolutions.com
[...] Learn to Add a Custom Favicon to Google Sites [...]