Travel Lifesavers

Having quite large number of trips per month, I have many important details to take with me, so that to feel comfortable on my way. But there's one thing without which I'll drive crazy. This one is headphones, and, of course the device to plug them into. However, the situation when I can forget my phone is outstandingly impossible, and it can be a satisfactory substitution of the player.
Headphones are life helpers in many cases when being on the road.
First of all, they can help you survive when you have a boring neighbor who believes that you should necessarily know all the details of his personal life.
They can help to fall asleep quickly listening to some calm cradling melodies. In general, music can create the atmosphere of the trip: from melancholic to cheerful one.