When I was 13 my parents bought a Commodore 64 for me and my brother. It was my first computer and I spent a lot of time copying disks, playing games, watching demos, going my first steps in programming (BASIC).
I still have this old machine (in fact meanwhile I have two of them), and it still works. Even most of the 20 years old floppy disks are working. But I don't use it often. So I was watching wether I find a cool thing to do with it. I collected the instructables involving the Commodore 64. If you find more, send me a message and I will add it. Or if you still have a Commodore 64 and make something cool, share it!
Attribution: Image by Bill Bertram under Creative Commons Attribution-Share alike.