like, just anything, clones, ripoff designs, analogs, etc, really anything that isn't just HDMI/ VGA goggles/sunglasses, anything more dicrete than that, unless of course they use all the proper focusing lenses and etc to make it in an almost normal looking sunglasses form factor, not neccesarily in that case being transparent, and the same goes for all of them, it doesn't neccesarily need to be transparent, though i'm not looking for anything which blocks out both eyes.
Added (1). even just a half decent display unit, without the attached computer. I'm quite capable of programming/constructing a display driver for it for whatever i want to display on it.
Read more: Are there any google glass-clones or other wearable android or linux systems, not neccesarily using the specific display glass uses?