In Daniel Suarez's "Daemon" novel (or maybe its sequel), one character wears a haptic feedback vest that covers their entire back and torso, with "pixels" that vibrate. It was described as having a second sight, since it's effectively like having low-res monochromatic vision in a 360 degree arc.

I'd be very curious to try something like that, but I have no idea what I'd "project" on such a thing. I suppose if I were a farmer or rancher, it would be interesting being constantly cognizant of where members of the herd were.

Maybe once my kid is older and starts crawling/running around, it might be a fun thing to wear to a museum so I'm instantly made aware if she stars making a bee-line away from me.