@awakeninglife This is what we did with ours as well. Establishing a strict routine that also has rewards for success is key for heelers. We would give him a frozen Kong or lick pad to occupy his brain in the crate as well.
@nikknakk Mine is obsessed with his Jolly Ball. He also likes unbreakable frisbees, though he is terrible at catching them. He loves to just fight with them.