Boeing has a patent that attempts to solve one of the perennial problems of air travel: sleep, or, rather, how to sleep comfortably in coach. Unlike the fancy seats up front that convert into flat beds, the compact and rigid seats in the back contort us into sleeping in awkward positions not intended for humans. It’s bearable on a quick domestic hop, but what about red-eyes and long international flights? Boeing envisions a detachable backpack that lets you lean forward, cushioned for comfort. But like all patents, it may never reach production.

Fortunately, there are alternatives. Whether you’re trapped in a coach seat, a bus seat, or a bench at an airport terminal during a layover, these are our favorite accessories that can help you achieve a good night’s sleep, even if it means sitting in ungodly positions. And while these products may not look high tech, they actually contain advanced materials, technologies, and designs that aren’t commonly used.