Reproductions are still produced, see the wikipedia page.

Really cool! Will we ever construct Babbage's Analytical Engine?

I had a CARDIAC when I was young.

Wait til you see the DigiComp II! It has flip-flops driven by marbles and gravity. Truly astounding.

I had one! One of my favorite possessions in elementary school. It came with a nice booklet introducing the theory. Because I studied that booklet, I was probably the only brat in my 2nd grade who knew about number bases. I entertained myself by converting decimal numbers into binary.

It's cool to see Chris Staecker's channel getting some love, he brings a a kind of joy I miss from the old internet. I know it's still around, but it certainly feels more difficult to find and suppressed in many ways.

3D print your own: https://www.thingiverse.com/thing:1477209

This reminds me, a CNC wire bender is on my list.

I bought one of these from Edmund Scientific when I was a kid. I wasn't able to figure out how it worked. I've thought about it occasionally over the years. Enjoyed the video

I still have my Digi-Comp I, as well as Dr. Nim and Think-a-Dot.

Wow. didn't know mechanical computers could be so simple.