Arizona is 5, and gets really bored in his corral/stall during the day. The corral is approximately 12x12. He will paw at the gate, kick at the wood, and turn over his hay bucket. Not angry, just bored.
Items he has inside the corral:
Jolly Ball (completely ignored)
Hanging Likit (he has NO IDEA what to do with this thing)
Hay bucket (pretty big)
What other things could I put in his corral for him to occupy his time with during the day while we're at work? I was thinking of tying various knots on the rails around the corral for him to work loose since that is one of his favorite past times while tied.