My handhelds well preserved, with the exception of my 3DS, which has a scratch on it since I bought it used and got it cheaper that way. My Switch is fine as well, but the joycons are fucked, the drifting is ridiculous. My Wii is also well. My PS2 was already a dinosaur when I bought it, and it died not long after, the poor thing.
Also, I think the heat is killing my PC's graphics card. I changed every part of it but that card, and it crashes from time to time, no idea why.