CDs for me. If you buy a big disc binder they really don’t take up that much room. Its about the same size as the 1971 compact OED that sits on the same shelf.
If I really wanted to get rid of them I’d just donate them to the local library system. The ones they don’t want they’d resell as a fundraiser.
I expect they will not be worth it as they’re too underpowered for your specific use case. (I’m assuming your use case is hosting complex physical similations for a major university physics department and the old computer you’re considering on Amazon is a used version of this one or something similar.)
For my home server I use whatever old PC I have laying around already.
Last time I checked, the World Health Organization estimates indicated that around 3 million children under the age of five, a population about 50% larger than everyone in Gaza, die to diseases and deficiencies that result directly from food insecurity in a world that produces something like a third to half more food than it needs to feed everyone.
If that doesn’t move the shame needle enough to spur action, I don’t see this doing it either. For reasons passing understanding, there seems to be no limit to the cruelty that will be tolerated from Israel.