Ever wanted to add sound effects to the actions your fursuit makes as you perform and interact with people, but you don't like the idea of actually using your voice?
There's an option that some of you puppeteers might already know about... something you can add to your suit that weighs just a few grams: a swazzle!
This is what they used to voice the puppets in the old Punch & Judy show.
A swazzle is a tiny device that sticks to the roof of your mouth. The ones I picked up are soft felt with a tiny plastic membrane on one side. As you force air through your mouth with your tongue up, it makes cute squeaky sounds that can add an interesting dimension of sound effect backing to your performances. I've found the sound carries well through some kinds of suits.
There's a place in Australia that sells them for about $3 each. You'll want to get a few of them because-- especially when you're just learning-- they don't last very long (the membrane gets deformed from being mashed around in your mouth).
The video starts a little slow, but gets better: