Old laptops or old boards with crts. Sure power is an issue but with your transformer (which is present in most 80s computers) and large, easy to replace and often even make components, you stand a lot more chance of that stuff surviving decades of use. No chance with laptops; maybe if you pack 100 x220 thinkpads? Those you can swap parts out. Still not robust as some of the 80s monsters I have which got wet (roof leak), too hot and had parts break but still work 40 years later. Some with no fixes at all. Those crt monitors are very robust as well, easy to repair-ish (you can use them even with a lot of damage). I have enough computers, diy and farming experience to probably be alive and kicking for a while if this happens, but I think I am not so interested to try.