The 360 Swivel Seat Cushion might be nothing more than a lazy susan for your behind but just like a regular lazy susan, it’s super handy. Ideal for people with back, knee or hip problems, the Swivel Seat allows you to easily rotate your body while seated. Put it in your car or any other seat and glide from front to side with ease. This $19.98 cushion is made of a soft lightweight memory foam body for comfort and portability and a no-skid base.
Memory Foam Donut Cushion - Hemorrhoid Treatment, Tailbone and Coccyx Pain Relief by Everlasting Comfort
ComfiLife Coccyx Orthopedic Memory Foam Office Chair and Car Seat Cushion for Back Pain and Sciatica Relief (Gray)