I'm reusing a blade server I managed to snag from a company I worked for in 2008. It's perfect as a media server for friends and family. It is only recently degrading slightly but hey, it lasted a long time!
Point is you can use almost anything. Do your homework on compatible parts and make what you can afford
I got this kind of support from my parents nearly 20 years ago. It was absolutely lucky and I got access and care in ways others didn't. It made me feel guilty the older I got and the more trans friends I made, who didn't have anything close to what I had. I feel very sad about it. My life wasn't perfect, I still have problems, but probably way fewer than the alternative.
In my day to day life I try to make up for it by helping other trans people. I become the support that I always had. It's not as easy as it looks. Hope you're doing well and I wish for you and others reading this to find support where you can get it. I know I'm trying to pay it forward. And so will others. Look for the helpers.