This is the first thing I thought of too. Those travel pillows don't work for me at all because I never feel like I'm "reclining". Out of a sense of empathy (as

This is the first thing I thought of too. Those travel pillows don't work for me at all because I never feel like I'm "reclining". Out of a sense of empathy (as a person tall enough to feel incredibly cramped in airplane seats), I only put my seat back if the flight is longer than 5 hours (i.e. international travel). The only way I'm able to sleep is by resting my arms/head on the tray table. A travel version of this would be a game changer. The only drawback is if you really pass out and start drooling :)