So with some trial software, cardboard, a nylon strap, a stapler, and a pair of joycons, I managed to get a VERY rudimentary VR rig set up.

Upside: cheap, I have spent $2 on this endeavour so far
Downside: bodgy software, may need to try alternative solutions, 10 minute runtime limit, and there's so little smoothing or calibration that I get motion sick with just those 10-minute test runs

With some finetuning, a chance to make proper grips, and maybe secondhand equipment, maybe I can get it good enough for primetime!

cc @Zest @wolfcoder