A simple table tennis paddle handle, to which a Vive Tracker has to be mounted. All you need in addition to the printed part and the Tracker is a 1/4 inch screw. The paddle also has a hole for a lanyard, which I simply took from one of the Index controllers. This handle works great in "Eleven: Table Tennis VR", but SteamVR can be a bit annoying along the way.
The dimensions have been taken from this site: https://www.dimensions.com/element/table-tennis-ping-pong-rackets-paddles
I don't normally play table tennis (and frankly suck at it), so I don't know how accurate the dimensions are, but I hope it's close enough.
Simply print this in the orientation of the file. If your printing bed is too small (like mine was), you can easily rotate it 45 degrees around the Z axis.
The author hasn't provided the model origin yet.