While planning for my upcoming trip I found (in the luggage section at K-Mart) some little plastic luggage "locks." I think they are intended to be placed on your suitcase before you check your luggage at the airport, but can be cut off if security wants to open your bag. It occurred to me though, that these would be a great way to keep hotel workers from looking through your luggage when you're not in your room. Just place one on your suitcase before you leave the room and you can cut it off when you get back. Then use a new one the next day. Plastic zip-ties would probably work just as well. It's not going to keep anyone out if they are really set on stealing your stuff. They'll just cut it off. But you would know that they'd done it. I never take anything when I travel that I think anyone would want to steal so I've never had a problem. But I think this would stop the casual "glancing through the luggage just to see if these people have anything worth stealing." Maybe I'm behind the times and everyone else has already thought of this. I just thought it was a neat idea.