While investigating tracking precision for motion control timelapse filming in VR I had a thought, and then sidetracked myself for half a day designing various Tilt Brush/Vive pendulum rigs. The first one is very simple, but worked beautifully:
If you have Tilt Brush, I’ve made the sketch available for your delectation [Dropbox link – 1.94MB]. It’s a lovely place to spend some time.