Picking a name out of a hat is boring

Here is something I love - I used to pick out of a jar, or let children answer when they have their hands up. But then, I found this: fruit machine. I think it is very important as a teacher to have good questioning and answering sessions. People who are shy are unlikely to put up their hands and often it is the loudest people who get the chance to share. Previously I have used jam jars with all the names of the class in them, but this is quicker and more effective and I never seem to get round to making my jam jars. This is easy to use and I love the noises it makes when it selects the child. I now need to work out how you can have all the names of different groups saved so you don't need to imput them everytime. 

I'm planning to try it out in a lesson tomorrow with a year 7 class. I have a new teacher coming to observe my lesson and we will be using all manner of different internet based tools; I can't imagine what he'll think. But maybe he'll catch on and I will find a partner in crime.