Sears offers the KIDdesigns Disney Headphones in Frozen (pictured), Captain America, Spider-Man, Doc McStuffins, and Sofia the First for $19.99. Plus, Shop Your Way Rewards members earn around $10.20 in SYWR points. (Not a member? It's free to join.) Assuming you'll use the credit, that's $11 under the lowest shipped price we could find for any of these styles. These headphones feature an adjustable headband and kid-friendly sound levels.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase. Plus, Shop Your Way Max members bag free shipping.