Kasey also destroys her toys. In particular, she devours the rubber chickens that have become popular in the pet stores -- but she also removes squeakers and stuffing with surgical precision on any toy. (: I worry about her swallowing the stuff.
One toy I've found (in addition to the ball with feet that you all have mentioned) that has thus far been resilient is a toy that I find consistently at the grocery store, of all places. It's a Hartz toy, fairly inexpensive, that looks like an ice cream cone with spokes on it. Here's a link so you can see what I mean:
http://www.hartzadvancedcare.com/Our...633&ActionID=2
Kasey LOVES the squeaker on this thing (and the other toys in this line - there's another one that resembles a rubber porcupine), and she shakes and shakes it, then brings it to me to toss for her. The only thing that you might not like about it is the noise -- the squeaker is pretty loud.
Good luck!! Anxious to hear if anyone else has found success....