Beautiful craftsmanship, excellent soldering kit
For PDP-8 replica kit: the PiDP-8
While it's true you can get 80% of the experience by using SIMH on a bare Raspberry Pi, nothing quite matches the look and feel of snapping switches and watching the blinkenlights fade in and out. The experience of programming a PDP-8 is austere and minimalist. This review is for the hardware and its documentation. The case is wooden, and thus very configurable to meet your needs. The main PCB is well-marked and sensibly laid out. The instruction sequence is well documented. I "boldly" soldered the single buffer IC directly to the board rather than using a socket. I have one teeny-tiny complaint: I wish there were an insulator (e.g. plastic, wood, paperboard) included, to put between the Raspberry Pi and the back of the PCB, as the instructions mention that the USB and Ethernet shields on the Pi 3/4 will short out some of the LED leads if it touches them. But creating one myself was as easy as cutting up an empty paperboard cereal box with some scissors. It was a little fiddly to get the screws in place to hold the insulator and Raspberry Pi to the back of the main PCB.
My advice: Be very careful handling and installing front panel, as its rear scratches very easily, and these scratches become transparent. Also, don't attach any extra components "just in case," like a spare USB drive key, without first testing the whole system before you mount it all in the case. Otherwise you'll find your system no longer boots, and you have to either cut a big hole in the back of the case, or unscrew everything to get it working again!
