How many times have you seen someone use the corner of a wall or cabinet to scratch that itchy spot in the middle of their back? I know I have done it many times. My Idea is to make a stiff bristle 'brush' that could be mounted on the corner of a wall or wherever at the right height to scratch that itch. Probably about 1 to 2 feet in length in an 'L' shape to fit on the corner. Perhaps attached with Velcro so it could be removed for cleaning.
Reward: Like to get a couple to put in my home!