Busy Buddy Bristle Bone
https://www.amazon.com/PetSafe-Busy-Buddy-Bristle-Medium/dp/B001F0RRT6/ref=sr_1_2?s=pet-supplies&ie=UTF8&qid=1458079197&sr=1-2&keywords=busy+buddy
$4.95 - $13.04 (Depends on size)

Helps redirect potentially destructive chewing behavior into positive playtime.