Cylen Seat Cushion, $14 with code Q9O5EGJG

We’ve posted a lot of deals lately on these coccyx seat cushions, but $14 is one of the best prices we’ve seen to date, and this particular model is one of Amazon’s top sellers. These will improve posture and ease back pain in any chair where you spend a lot of time, from the office to the car to a long flight.