These designs are so clever I just knew I needed them all.
We haven't had a guest to the house in months that hasn't had to endure my Marble Show :)
So far I have printed the bucket lifter, and the double screw, along with 6 or so modules. All have printed perfectly, and just required a small amount of tweaking to get the chain length right for the bucket lifter. I did find the battery cover a little hard to lift up, so I have added a small handle to mine.
I love that the supplied files mostly come in 3MF format. Having all the variable height stuff preset is a great idea, and makes the whole process that much simpler.