Plane trays and apple juice

On Saturday, I was sitting on the plane on the way back from my holiday drinking some apple juice. Of course, the little indented circle for my glass was on the right hand side of my tray (ie: the wrong-hand side). So, I had three options:

1. hold the glass in my right hand so I could put it easily back in its place
2. hold the glass in my left hand and reach over to put it down
3. hold the glass in my left hand and ignore the indented bit on the tray completely

I know it's a petty point but it's just another example of how we lefties are overlooked when it comes to product design. Like having the loo roll holder to the right of the loo and the soap dispenser fitted on the right hand side of the wash basin. Ho hum.