I just ran across two possibly useful ideas for meeting planners and other frequent fliers:
The UpRight Sleeper, which looks like some sort of neck brace but may in fact help you sleep? Mmm, comfy. It also comes with a coverup tote so you don't look quite so debilitated.
And then there's this quick hack that, using just a couple of cents worth of materials, can turn your iPad into a seatback video screen so you don't get a crick in your neck from staring down at the screen on your tray table.
If you try either or both, let me know how they work, OK?