Although difficult and time consuming, the end result is, if done well, absolutely memorable. This is a general idea that you can take and run with. It is the concept used many years ago by “Alvin and the Chipmunks” fame. The chipmunk voices are actually recorded adults speaking very slowly, forming their words very clearly, taking twice the time of normal speech. When it is played back at double speed, you get the chipmunk high-pitched voices. I have used it many times, but it takes a little effort. The slowed down speech patterns needed to achieve a clearly understood “mouse” voice on playback takes just a little bit of practice and work but can be mastered by anyone. This technique can be used to present any Bible truth or concept. You can even include songs if you like. Simply record the instrumental part of the song at the double play-back speed, and then slow it down to half-speed to add the mice vocals.
Basically, I have a conversation with some make believe church mice. I have used an old reel to reel tape recorder with multiple playback speeds, but this can also be done digitally. I write out a complete script of a conversation with make believe church mice. Usually I will include more than one character mouse, each with a VERY distinctive personality. My characters will argue with each other and carry on in all kinds of ways, even causing me to reprimand them for their behavior. (One of the endearing qualities of the “Chipmunks” was that they seemed to over-run their manager and take control of the show.) I then set up to record the mice portion only of the conversation. I use my voice to speak the mouse parts, but I speak very slowly and distinctly, because the entire recording will be sped up to double speed on playback. The key with the “slow” recording is to leave blank space of twice the time for your “live” voice at playback. Once the mouse portions of the conversations and songs have been recorded, playback at double speed and learn the length of pauses and timing so that your conversation sounds as if it is really taking place live. Often I will complete the illusion with a box labeled “Mice” or something similar, and put a non-functioning microphone near the box.
Believe me, this may take some time on your part, but the effect of imaginary mice with lots of character, bantering back and forth is priceless and extremely memorable for those “listening in on your conversation.”