I've heard you can put just about anything you'd like in there. Peanut butter and yogurt are good options, especially since you can stick them in the freezer to freeze and then they last longer, making your baby have to work harder at it. Personally, I usually cut up some carrots and stick them in Sasha's kong. I have a Kong Ball for her to and it's so funny to watch her push it along the ground with her nose and paw at it trying to get the carrots out. |