While you're probably not preparing for Hogwarts you don't have to be a sad muggle when you travel. Although we'll both agree floo powder would make life much easier. Travelling can still be fun and enjoyable.
I'm going to tell you to roll your clothes but this time put them in a plastic bag first. Roll, squeezing out the air and creating a vacuum seal. Smart right?
Finally when packing be sure to leave room in your bag. If you've followed the above tips you'll find that you've built in room but just in case, do leave room.
Tell me in the comments, which travel tips are you going to try when you travel next?