It's a mid-2012 Macbook Pro, I just bought a new battery for it and replaced the optical drive with another SSD.
Granted, I don't do much heavy computing with it, just internetting and watching videos. The only time it really shows its age is when converting videos from my gopro.
I have my original iBook SE (G3, the plastic clamshell ones that look like the old iMacs) as well as my original G5 Tower. All the machines after that were sold/given away; but those are sticking around.
I should boot them up sometime to see what a time capsule they are… if they still even start lol.
I have, under my desk, a PowerBook G4 and two Intel Macbook Pros. There have been weird software and connectivity situations where I've actually pulled them out and used them.