I started building my own computers in the mid 90's. Over the years extra parts just slowly accumulated from mine and my family's projects and upgrades. There's ram in there from ddr3 down to some old 286's, a few laptops, etc.

Most if not all still work, it's just outdated. I have another box with more ram somewhere, and a different box with just cpu's.. 286, some 486, some original pentiums, and AMD etc up to I think an athlon or three in there. At one point was keeping it all around in case someone I knew needed something. It's been raided for bits a few times, but now it's all so old what's left isn't worth squat anymore and I just haven't tossed them all yet.