Eye protection. It‘s essential. There is no getting around it, if you find yourself working with firearms, power tools, heavy machinery, ATVs, etc. You know how important it is to have good eye pro.
Admittedly seeing thermal images in the stark of night is cool. Even in a limited product test mode, my mind was going wild conjuring up the multiple uses for such a tool. I was given the opportunity for a month to check out the FLIR Scout PS series handheld thermal imaging unit.
In the world of survival prepping there is no substitute for having quality optics on hand. I have found that out the hard way a number of times, but never again. So many quality optics are on the shelves these days that no self-respecting prepper should be without a good set.