http://www.cnn.com/2010/WORLD/europe...ex.html?hpt=T2Those items were an empty shampoo bottle with watches attached to it and an empty bottle of a stomach medicine with mobile phones attached, according to the U.S. law enforcement source, who has been briefed on the investigation.
Only reason I can think of is if the luggage got in the water during a crash, they wouldn't sink to the bottom of the sea, though they'd be ruined by the salt water.