A great toy that my dogs love:

It is a tennis ball that has approx. a 6 foot rope
attached to it.
The other end of the rope has a stick for the human
to hold on. You hold the stick and try to keep the
tennis ball away from the dog chasing it.

Rocky has gotten to smart and he is excellent
at catching the tennis ball no matter how well
I try to trick him.

Happy Graduation.