How do you teach and English class when you have no voice?

Last Friday during the afternoon, I had no voice. I could whisper but has anyone here tried to whisper instructions 6 year olds? I need to get across specific instructions on how "u" sounds when there is an "e" behind it. Yeah, it was fun. I have class tomorrow and I still have a voice that isn't going to hold out for the entire day let alone the entire week. So I have come up with some ideas to help get my point across:

1. Change the lessons to be about seals. Teach the kids how to make sounds like seals: Ork! Ork! Ork!

2. I could become Marcel Marceau

3. I could let them go crazy for the 20 minutes I teach them. But I'm scared of this

Any other suggestions?