I have a hard time sleeping on a plane. As soon as I nod off, my head drops and I startle myself awake. I've tried those horseshoe pillows but they don't work very well for me. The JetComfy is a travel pillow that looks like it might allow me to sleep comfortably on a plane. It's cushion on a pole that clamps to the arm rest. You rest your head on it and fall into a deep slumber. I hope that's what happens, at least. It also contains a USB battery to charge your devices and a compartment that holds a combination pen/stylus/light. Pre-sale cost is $65 on Kickstarter.