Only big corporations can make computers and computing devices like smartphones, but this is not fatal for us: there are tons of older hardware around, which was produced before the era of total surveillance. Many older computers still work, only they can't run modern software (made by people who are either idiots, or deliberate public enemies), and you can't use them to visit modern web sites, created by the lowest form of life who call themselves web developers or even web programmers. We're not going to create more resource-wasting software, and we're going to strive getting rid of the so-called World Wide Web in its present (miserable) state; actually sometimes we have to create web sites, like this one, but you can use computers produced 25 years ago and web browsers from the same period to open any of our sites.
So, collect and keep older computers and other hardware. Average people don't know how to handle older computers, and are usually glad to give those away for free. Use opportunities of this kind.
Of our special interest are Intel-based computers manufactured in 2007 and earlier, and AMD-based computers made no later than 2012. Don't think they are 'too old'; as a simple rule, if a computer has USB ports, and it works, then it is still useful. This is, BTW, not because we like USB (actually we don't). The thing is that the last generation of both desktops and notebooks which didn't have USB was Pentium-1, made in mid-1990s. Those machines may still work, too, but they are outperformed (many times!) in computational power by the very first SBC of the Raspberry Pi family, which only consumes 2-3 Wt of electricity, while an average Pentium-1 desktop may take like 100 Wt and more.
BTW, yes, all those SBCs are of interest, too.
Newer computers, like the stuff produced in 2012—2017, take some effort to remain more or less safe, but they are still useful. Don't let them end up in wastes.
Besides computers, it is desirable to collect older network equipment, like switches, routers and access points. Older ethernet equipment won't work faster than 100 Mbit/s, but, believe it or not, there are no higher speeds in the Internet, no matter what all these 'measurment gauges' show and what your I.S.P. declares.