What can possibly elicit a more excited response from a 5 year old than a sparkly microphone? Well okay, maybe any sort of drum but if they aren't getting to play that instrument the magic microphone is the next best thing.
Now I know that you may have a different process but I start my K year off (after rules of course) with a chance to practice our "Four Voices". I don't go very in depth with this process at this point just looking at the four voice posters and then some simple echoing. I also give each child a chance to share one of their four voices using the magic microphone.
I like this portion of my first lesson because it gives each child an opportunity to perform a solo where they have a choice in how they share their voice. I have very little resistance to this activity because my more reserved little ones can choose to use their whisper voice. This is a great way to ease into more solo activities and to reinforce being a good listener.
You may be thinking that I end up hearing all shouting voice, and the first few students did until I got smart. Once we use a sign I turn it around so that the next friend has to choose a different voice. Sometimes I will have two signs turned around. I do this throughout the activity keeping the shouting voice turned as often as possible so that my lesson doesn't turn into a screaming match. At this point, I keep corrections to a minimum and get a feel for where my students are in understanding how to use their different voices.