So, I ordered this megaphone on aliexpress, but it didn't come with a handle nor battery compartment. https://de.aliexpress.com/item/32686557652.html?spm=a2g0s.9042311.0.0.27424c4db2ykbb

That's when I decided to create my own. This was also an ideal model to try out the fuzzy skin setting in Cura. I quite like to look of it and it feels more grippy in my hand. The megaphone uses are regular 9V battery in a case. Also, you need one M5 screw with a nut.

Enjoy.