I'll list my stuff in a slightly different order, since this is the latest iteration of the computer I purchased in december 2000 and have been upgrading incrementally ever since:
Less common items: 3.5" Floppy drive (which was first used in my very first computer from 25 years ago). Now it's just a place holder though, and not electrically connected to anything. Asus BluRay reader / DVD burner. I've yet to get a BluRay disk for it to read, and the number of DVDs written are also few... Antec CP-850 power supply. Power supplies are common, but those of the CPX form factor are not! Antec P183 case. One of the few models that support my PSU.
The regular stuff: Storages: Samsung 860 EVO 1TB M.2 SSD (system disk and common software). Seagate Barracuda 2TB HDD (storage and some less critical software). Kingston V300 128GB SSD (former system disk). Motherboard: Gigabyte AB350 Gaming-3 CPU: Ryzen 5 1600 (with the stock Stealth Spire cooler) RAM: Crucial Ballistix 2x8 GB 3200 @ 3.1667 GHz. Graphics card: Gigabyte Wind Force GF GTX 1060 (6GB). Monitor: Some LG 24", 60Hz, 1980x1200, IPS.