Fugu stands out for its ability to transform from a carry-on to a larger piece at the push of a button. It starts as a hard-shell carry-on case with a pull-out handle and wheels. Hit the button, and it inflates the walls and expands into a much larger case that can be used as a small table and is sturdy enough to sit on. When it is expanded, unzip the front, pull out the two-shelf storage compartment and hang it up. Voila, you're unpacked! When it's time to head home, put the packed compartment in the expanded case and push the button to compress. Then zip it up, and you're back to carry-on mode. Cost: $299