Quiet Signals for 2 and 5

So, my last minute practice of how the day would go was slightly incomplete.  How am I going to get them quiet?

2nd Grade
1- Shh shh sh sh shh.  Shush in a pattern that children repeat.
2- Freeze
3- Bell/chime
4-Youtube wierd sounds and play them

5th Grade
1- Class...Yes.   Classity class class... yessity yes yes
2- Youtube wierd sounds and play them
3-  Online timers
4- Hand up, put down fingers slowly.  Children get each other to be quiet and before fingers run out.

Helpful Links:

http://www.online-stopwatch.com/countdown-timer/

http://www.online-stopwatch.com/cash-clock/

http://www.teachitworld.com/index.php?CurrMenu=357

http://www.timercountdown.net/1-hour/

http://www.classtools.net/education-games-php/timer/

http://ipadstopwatch.com/timer.html