Here is a compact little robot that can treat tight muscles on your back and give you a relaxing massage. The Wheeme Body Massaging Robot gently moves over your body and caresses your back as it rolls. It moves up and down in fluid motion and uses its ridged rubberized wheels to treat your back. It also vibrates to ease aches in your body.
The Wheeme has finger-like projections to give you that tingling sensation. You can find out more about it here.