My son works for an Airline so he travels all the time and is always staying in hotels somewhere. Sometimes you just can't sleep when you hear odd noises so my son uses ear plugs all the time.
These plugs are well made and comfortable and block the unwanted noises. He carries them in his luggage and a convenient small carring case is included.
If you or someone you know uses ear plugs these are great. They are available on Amazon and reasonably priced. I'm stuffing stockings with them.