I have been stuffing Loup's Kongs with Peanut butter and a cookie. She loves them, but I'd like to give her something new. Any ideas?

i stuff kongs with bannana and freeze them.

Sometimes i put little pieces of dog buscuits,pieces of rice cake and small cubes of cheese and dip them all in peanut butter, and put them in the kong.

I also mix the squeeze cheese, cream cheese and liverwurst, she loves that one.

These ideas are great, thanks.