The Ferret Photo Gallery, on the World Wide Web, has a large
collection of JPEGs and GIFs.  It's located at
<http://www.ferretcentral.org/gallery/>.

There are also the Equipment How-To Photos, at
<http://www.ferretcentral.org/gallery/gallery-howto.html>
which show and describe examples of cages, shoulder bags, collars, and
so forth.

The Oregon Ferret Association has a clipart archive at
<http://www.teleport.com/~leonard/ofa/resources/clipart.html>,
and Bob Nixon maintains an archive with many ferret pictures, too, at
<http://members.home.net/bigrex/>.
Files there which start with "clip-" are clip-art.

Most of the pictures at one site are also at the other.