"Take me out to the ballgame!" Celebrate your tailgating, birthday or victory party with these Washington Nationals party supplies. Invite everyone over to watch Screech cheer on the Washington Nats at Nationals Park. Birthday Direct has an awesome selection of baseball party supplies to help you throw the most fantastic party of the summer. So, stock up on peanuts, cracker jacks, and Birthday Direct's Washington Nationals party supplies for your baseball party. Don't forget to take advantage of our FREE shipping offer too! Save 50-60% off select items.