There's another interesting game that incorporates blinking called Before Your Eyes. Apparently, you're doing trivial things (in the walking sim vein) but every blink jumps you forward in time. Could be seconds, minutes, or even months per blink. It's been on PC a couple years, so I wonder how it'll translate to VR.
I don't know this game, but from what I saw, it could work the same way as Switchback VR, or similar.