There are so many great enrichment toys available now as well as wonderful recipe ideas on what you can stuff the toys with.
Here are some links to some sites with great ideas that you can try.
39 Healthy Treats You can Stuff in a Toy
Over 50 Ways to Stuff Your Toy
There are also a number of active groups on facebook as well as Pinterest boards that are a wealth of great information.
What is your favourite thing to stuff your dog’s toys with?