I just want something portable to take with me to work and while riding the train. I don't care about audio controls -- I just want a microphone so that I can also plug it into my laptop for video conferences. I prefer a neutral sound-signature, but I know the price range won't take me too far; anything beats the headphones I got for free with my phone a few years ago.

When I searched, most of the relevant threads were old; I thought it might be better to simply ask.