Plexus Wheel Plus is the World's Simplest Back Relief
Tell the app why you want to improve your posture (back pain, be taller, etc.) and it customizes a 7-day track for you consisting of short stretches you can do at your desk or at home.
The Posture Laptop Stand is designed specifically for hotdeskers - those of us who need some neck re-alignment while we work, but have to pack up and run at the end of the day! Posture is super lightweight and portable.