Mine love these. Our local pet store has em for $2.99/ea, but I get them here:
PetEdge: Weekly Special Zanies Latex Toy Prepacks
It's the small 6 pcs for $7.99.
They're soft & tiny, even Mimi's daughter (3 lbs) is able to put this in her tiny mouth & squeak it.
Here's a coupon code for free shipping if ordering $175 or more: WK42