I have an old #MacMini from circa 2010, but I can't think of anything to do with it.

It doesn't have any USB3 ports and only one Ethernet port, so I can't use it as a router. Its DVD drive doesn't work (probably just dusty, but I don't know how to open it up and clean it), so I can't use it as a DVD player.

What do people do with old #Mac Minis these days?

Is it perhaps possible to run modern macOS in an emulator on it?