Forget the PlayStation Classic, if you still have an original console lying around why not give it a new lease of life?
It is essentially a cartridge that connects to the parallel port, allowing you to play games loaded from an SD card. No more disc swapping your favourite retro PlayStation games. Unfortunately it does require some modifying of and soldering to the mainboard to install, but there's often local electrical/hardware stores who can help with this, and the company behind the PS-IO - Cybdyn Systems - offer a mailed installation service themselves.
It isn't widely available just yet, although they seem to be building toward a public release nicely. I stumbled upon this device in August, placed an order in the following pre-order window, and it's literally just being processed for shipment, I can't wait!