My fuzzy recollection is there was a CAVE setup (at siggraph? some years back) which used a head-mounted backwards-facing tracking camera, and the hemisphere behind you was filled with tracking markers. So if you quickly turned your head, out of the corner of your eye... apparently it created "something is behind me!" creepiness.
There's also a VR game prototype that mutates the world behind you when you are facing away. "Wait, was that chair there before?" It's disturbing.
The Shadertoy Fovea detector[2] illustrates how narrow your high-res fovea is.
[1] https://geoff.greer.fm/2016/05/14/interesting-tech-that-is-j... [2] https://www.shadertoy.com/view/4dsXzM
I have a thing for the x201 and there is apparently a mobo upgrade on the bench for that thing too.
Do you have any write-ups on your bikepacking trip?
It's an ordeal, but it's possible to have one. This[1] is my primary computer. It's an X61 chassis with a Core i7-5600U, 32GB of RAM, and 1TB SSD. The screen is a 12" 1400x1050 IPS LCD (matte, not glossy). It's my favorite laptop.
Putting it together took months. There's a group of enthusiasts in China called 51nb that make modern internals for old ThinkPad chassis[2]. I ordered a barebones chassis from them in March and received it in June. After that I replaced the LCD's ancient CCFL backlight with an LED conversion kit[3], improving battery life and brightness.
If you want to know more, I wrote a blog post detailing the whole experience[4].
1. https://geoff.greer.fm/photos/x62/DSC_2304.JPG
2. https://www.51nb.com/benzhanshiye/2017-06-08/83668.html
3. https://people.xiph.org/~xiphmont/thinkpad/led-backlight.sht...
4. https://geoff.greer.fm/2017/07/16/thinkpad-x62/