Buy some servers from a local gov auction. I've bought loads, multiple pallets, that fill a 4x6 U-Haul trailer for $50-100, shoot my C7000 blade system that I kept and use at home with 16x blades was $22, and then either part out the systems or fix them and sell on eBay or Amazon FBA. I usually just pull the power supplies (literally pull as it just slides in the back with a clip) and send them to Amazon as the crypto mining community eats those things up, I can never keep them in stock; along with ram, cpu, drive sleds. Make $100 per server easily; just know they weigh an absolute ton so you'll want a good truck or trailer, plus you might want some help. I can tell you from experience filling and emptying a trailer of servers by yourself sucks but returning 3 grand or more on a $100 investment makes up for the physical pain.