Share 'Top tips for quietening the room!'

Hi - I would love to hear from others on top tips to quieten the group so that you can move them on!  Do people use sounding (tinging bells - seems a little "alternative" for some groups), or hand in the air (seems a little formal!), or desperately trying to be heard "OK then, time to move on"... but you need the instruction to be listened to before people start shifting! This is something I wou…