Bulk Art Party Centerpiece Balloon Kit. Case of 4 centerpiece balloon kits. Each Art Party centerpiece balloon kit includes: 1 round 18 inch foil balloon, 1 styrofoam base with red metallic fringe, and 3 - 5 inch red star balloons. Kit also contains straw sticks to inflate and then hold up your air-filled balloons on the base. No helium needed. A great new party decoration idea!