When I read it in the Saturday's paper (yes I know it's weird, but we don't get any comics on sundays) I thought they were clicking pens, or keys on PDA's.
The clicking pens would be funnier because pointy hair says that productivity is up, and they simply don't like attending meetings (and so they claimed that they needed the time to do work). It is more likely that they were actually working hence it being pointed that they didn't want to be there.