I have a toy on my website that is a bag with 10 balls in it. Some are squeaky, some are not. It's like the I-Qube. It's a plush puzzle toy, they are supposed to find the squeaky balls. We play fetch with the balls. I also put treats in the big ball and let them take all of the balls out to get to the treats.
http://www.barkaholics.biz/collectio...es-bag-o-balls