Here are a couple websites that have ferret toys (also give you ideas
for toys you can make at home) that can be used indoors or out doors.
 
http://www.tarzansferrets.com
http.//www.tarzansferrets.com/tornado.htm
http://www.cgl.uwaterloo.ca/~ssiu/family/toys.html
 
A house I lived in years ago had a small shelf that was a foot below
the ceiling.  I ran a tunnel up there, throughout the house.  The
ferrets would follow me from room-to-room.  They loved it.
 
Deva
[Posted in FML issue 4945]