It wouldn't be senate estimates without senior Department of Foreign Affairs and Trade officials having to justify the presence of a $6300 ping-pong table in the 'InnovationXchange' ideas hub.[...]  "Senator you call it a ping pong table, I call it a meeting table," he said. "It is used all day for meeting and not for ping pong. It is actively used throughout the day and sits 10 or 12 people around it."