Have you tried a Google search on animated SWF files?
yes i did, but i found no nothing...
If you have Microsoft Office, MS has a great site for Clip Art (some animated), photographs, and all sorts of interesting tid-bits. While you do not need Office to download and use the material, it helps, in that you can install a downloader to make the job much easier. There are literally 1000's of Clip Art images, plus others, available.