A Cute Bag: Tennis Ball Grass Court Duffle Bag by Daniel Coulmann Whether they love to travel or hit the courts, they'll make use of this Tennis Ball Grass Court Duffle Bag by Daniel Coulmann ($35, originally $50). It is durable and comes in a variety of sizes. Image Source: society6.com Tennis Ball Grass Court Duffle Bag by Daniel Coulmann $35 from society6.com Buy Now