Is there such a thing as a headset that cancels out voices, crying babies, etc.? Generally the noise from the plane engine doesn't bother me--it's the annoying woman from the next row who talks way too loudly or the fussy toddler three rows back. I usually don't watch movies or listen to music. Is there anything that just cuts out the distractions so you can work quietly (or would that just be a pair of $2 ear plugs)?