Gibbs likes these:
They are called Hide & Seek toys. His current favorite is actually from Martha Stewart, because it has some kind of crinkly plastic in it that makes a lot of noise. Of course, then he loses the little stuffed toys.
As it happens, Drs. Foster and Smith sell refills of the stuffed toys. But they cost $8.00 and I didn't have enough other stuff to justify an order when I was looking. But today, I spontaneously decided that Gibbs needs a Big Boy Collar, so I went in to PetsMart. They didn't have the refills, but they did have some little stuffed toys from Kong:
Anyway, Gibbs loved it. He took it out of the Hide & Seek toy and ran of squeaking it. And squeaking. And squeaking. He finally dropped it and I went over to "reload", but the "fur" is all wet.
I wouldn't want it to get mildewy. And I'm glad I got three.