I just retired my Raspberry Pi 1 B (2011) last week. I had OpenVPN installed on it for accessing my home network, but since my new router has OpenVPN integrated, I don't need it anymore. I played with installing RetroPie on it, but it is far too slow to be usable.
If you have it running still, what do you use it for?
If you have it running still, what do you use it for?