I have often been accused of bringing everything including the kitchen sink with me when I travel. One of my favorite items for ease of travel is a pop up hamper. Having a place for my family to place their dirty clothes while away from home has made our traveling neater, with more space in the hotel or Grandma's house, and has made the mounds of laundry
start a little faster when we get home.
I got mine years ago, and don't really remember where I got it.
They fold completely flat, which makes them perfect for traveling!