Logitech G633 TrackIR TrackClip
thingiverse
Original design I found from whttigress's upload of a clip that fits on Logitech G930. I altered it a bit (only the inner V shape and width of the grippers) to adjust to fit a pair of G633 headphones. Update: picture added for confirmation of fit. Used it extensively last night, and no troubles. Best results - use some glue to secure the tracker to the clip.
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