I've stopped carrying my over-ear noise-cancelling headphones for this reason. They take up like a quarter/half of a normal item-sized backpack. I can sleep with plane noise. But I always bring a sleep mask, because I can't sleep with bright lights turning on and off all the time. I did recently get some in-ear headphones w/ noise cancelling, perhaps they're enough.

There's always the fear of losing stuff when you're moving objects around so much, too. One less thing to worry about.