I learned this trick from an experienced traveler. I didn't think it would work, but it does. We travel with an empty spritzer, a small one that probably held hair spray in its first life. We fill it with water and when we take our clothes out of the suitcase, we spray them lightly and hang them up. By the time they're dry they're wrinkle free. We even do this with suits and nice dresses, things we would normally dry clean.