Padfoot loves lick mats. While you can puree things like chicken broth, pumpkin, green beans and carrots to smear on the mats and freeze, it’s dead easy to smear on peanut butter—Padfoot’s absolute favorite—and stud it with small treats and freeze it. I have 2 silicone mats I keep in the freezer for when I need them. I punctured a hole and slid a carabiner through so I can clip it to the inside of his crate (Padfoot is not the instrument of mass destruction that Gypsy was, so I don’t worry about him chewing it up). The only thing I don’t like is the textured surface makes them a pain to clean. 

CARE makes lick mats with frisbees and carabiners, smearing the concave side with the goodies and hanging them on the outside of dog kennels, facing in. The dogs have to work a bit and there’s no danger of an unsupervised dog chewing up the frisbee and choking on plastic. These are also much easier to clean.