We have had requests from double amputees for playing ping pong using a 3D printable attachment. Jed Tango has been working on this, we will have some updates soon.
The design should be simple to 3D print, easy to grab to attach paddle.
It should hold on to the paddle really tight because Ping Pong is a game of speed, there's a lot of arm movement, if the fitting is not tight the paddle could detach, fly away and injure someone.