My New Kazoo

This is a kazoo in 3 sizes (100mm, 120mm, 140mm).
They differ mainly in volume.

The kazoo diaphragm can be bought here, for example:
https://www.amazon.de/Aluminium-Legierung-Membran-Membran-Geschenk-Box/dp/B07CPW8MMN/ref=sr_1_5?adgrpid=1195169790471701&hvadid=74698212804323&hvbmt=be&hvdev=c&hvlocphy=116555&hvnetw=s&hvqmt=e&hvtargid=kwd-74698309683005%3Aloc-72&hydadcr=28408_1859721&keywords=kazoo+diaphragm&qid=1648921915&sr=8-5
or here
https://www.thomann.de/de/thomann_kazoo_spare_diaphragm.htm

Alternatively, you can make it yourself:
For this you need a very thin foil, e.g. from household garbage bags. Normal plastic foil, sandwich paper etc. are too thick.
The "KazooDiaphragmaPlate" part is glued to the foil, which is then cut off all around.

Afterwards, the purchased or self-made diaphragm can be inserted into the kazoo and fixed with the "MyNewKazooInsert".
It may be necessary to leave this a little loose so that the sound is produced correctly. You have to try out how to inser