Luv2Roam - you are so right about putting your address on the inside of your luggage. Also another tip is to also put an address tag on any carry-on luggage, backpacks, jackets, etc. that you may carry on board. I worked for an airline and one of our biggest problems was bags, backpacks, sweaters, etc., that were left behind. We would usually take note of the seat where it was found and try to track the passenger that way but as we all know, bags and other items stored above a particular seat does not always mean that it belongs to the person sitting in that seat. Also, I suggest that you not pack keys in your checked luggage - it it happens to get lost you might be locked out!
Another tip (not really luggage related) is to bring those tablets of laundry detergent with you. It's always cheaper to bring laundry detergent with you but liquids and powders can be messy. I recently took a short trip to Tampa and brought those along. They worked out great - they don't take up much room and they don't leak! Between my laundry tablets and the great tip on the dryer sheets, I'll be all set!