One of the rules that comes into play whenever you work with programs that use graphics like Hyperstudio is that you can never have too many graphics.  If you're in that boat, consider the following Internet websites which all have great graphic collections for use with the Hyperstudio program.

Respect for the artists' copyright needs to be shown at all times.  The graphics listed above are all listed as being donated to the public domain for non-commercial or educational use.

Using clipart from someone else's library is one way to add interest to your Hyperstudio stack.  Even better, create your own.   Hyperstudio comes with its own set of drawing tools.  Above that, however, don't forget the other tools and utilities on your computer.  The Paint program, Clarisworks, or especially Kidpix are all wonderful tools that can inspire young multimedia creators.