Quiet Down

My hb works from home most of the time. He's got an office upstairs where he's usually tied up in Conference calls with co-workers or clients from other states. Just before his every call he would remind me to keep my son quiet and away from his office. My son is always energetic, excitable and can be really loud. So if my hb says he's got meeting in few minutes, that's the cue to keep quiet so I would keep my son occupied with anything to quiet him down.