Yes that is a good idea. I like the one where you take a small bowl, put a toy and some biscuits in it and freeze it. Then give it to the dogs to work on in the summer.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD