I needed a microphone for Skype (that sotfware reminds me of the old MSN messenger before old that “social media” crap).
I wasn’t willing to buy a microphone (this show how cheap I am). I found an old electret microphone in my junk box. I wired it to a simple op-amp gain stage and got a microphone.
This is where you realise that all those nerdy hours of reading stuff finally pay off.
And hot glue really helps also…