Any ideas for an "in mouth" voice mangler (NOT electronic)?
Has anyone got any ideas?
(Other than me ending up with a sore throat from screeching unnatural sounds.)
I'm thinking of something like a whistle I can bite/hold with my lips and blow through but whistling isn't very scary and most whistles don't work in reverse.
Or like when you trap a blade of grass taut in between your thumbs and blow, but would need to be "manufactured" so I don't need to hold my hands up.