Patroling the car park during the meeting!! That was good untill a no good scum of the earth MS suggested getting an FM microphone inside the hall and a receiver outside so you could listen into the blessings from the carpark!!! You'd get messages like 'Come to the door NOW!' to make sure you weren't listening to the radio!
Nearly as good was doing the sound. Do nothing much all night hidden out of sight at the back of the hall!
Sleep, talk, do crosswords, grafiti your WT, wander around the back of the hall making caustic remarks to the hall attendants slagging off the speaker... whatever.... (then when YOU were up on the platform, you'd watch the bastards doing the same to you!!)
Cheers, Max