Look closely, there is a hole middle of the body

Well body is metal and the c port has a cap. Should be find as long as you don’t sit on it in your back pocket. There might be sturdier ones, I haven’t really searched long

There are many with both C and A!

Example.

https://www.kingston.com/en/usb-flash-drives/datatraveler-microduo-3c-g3

I had this one! And a TDK of the same size

Have you come across a USB c only key that would be compact? Like just a stick the width of the USB c port

But but but… It’s because immigrants. And trans somehow idk