Tension hoops are a great, and cheap, tool to use in speech. You can use them with students who are working on auditory memory, phoneme discrimination, listening comprehension, and more.
Just grab a tension hoop and some dark cloth. ย The cloth will block your face without impeding the sound of your voice. It can challenge students to use their skills without reading lips or watching your face for cues ( if those are behaviors you are looking to diminish, of course ). ย I found this tension hoop with the sewing materials at Jo-Ann Fabric. It was $1.50, not bad.
You can watch this quick video if you want to know more ๐
You may want to consider using a “screen” material so that your voice isn’t distorted. That’s what I was told when I went through training for cochlear implant therapy waaaay back when, anyway!
Yes, speaker cloth is recommended so it doesn’t distort the sound waves.