My biggest design peeve is twofold: 1) toilet stalls in the airports that are too small to accomodate me and my carry-ons. Hello? I'm a traveller in an airport, why did you designers think I wouldn't have luggage? Or did you think I'd feel comfortable leaving it in a pile by the sinks where anybody could steal it? 2) more of #1 - toilet stalls with no shelves or hooks to put my carryons on. Why do I have to put my purse and laptop bag on the floor when the stalls have a 2-foot gap above the floor so anybody could reach under and yank my stuff away while I'm "going"?