Right now I use some dead cheap (about €60) Tiny Audio H.3 headphones. Why? Because I sit every day on the subway back and forth to work, sometimes I use them, sometimes they just get thrown in my backpack.
These are cheap enough that I don’t really care if they get a bit scratched, while the sound is actually quite good.
They are extremely light weight despite the size, and fit my head very good. They are easy to take on and off fast without adjusting and because of the light weight you can actually run with them if you’re late for the train or something.
There is a mic on the wire with an phone/play/pause button that works with any smartphone. The wire is also encapsulated with a thick red thread, so it don’t get tangled up, and can take a beating.
I think they’re only available in Norway at them moment, but I recommend them highly if you’re looking for some cheap, but good headphones for your daily commute, or for your kids.