Remember using a pencil eraser on the edge connectors?
Or that spray-able non-conductive 'lead cleaner' you could get at Radio Shack - but an eraser worked in a pinch.
Mine has been upgraded to 512k (or 48k, I'd have to go look, it's one or the other) memory. I've got a few other older computers down there but I mostly want to get my VIC-20 going again. As is oh so common, the power brick is dead. I could probably fix it myself, but I'm lazy, forgetful, and don't want to start a fire.
I have two awesome games for the VIC-20 - one is "Jacks or Better" - a poker game. The other is "FLOG" which a careful observer will notice is 'golf' backwards. It was all math to figure out the swings, not something where you press a button and then press another button to swing (like modern golf games). You typed in coordinates, spin, power, club, etc... It was horrible - but awesome at the same time.
Amusingly, I mostly hated the old computers.