These Steampunk clock only need a few m3 screw and 8mm tube. I use PLA vainilla white and Viva la bronze from Prusa, and the result is an elegant gear clock. The clock has an adapter for a DC motor or whatever else you want to mount in the back. The base of the clock is a component that can be bought anywhere, but just in case I left several ways to adapt or modify if necessary.
https://pin.it/16bU1Xs
The author hasn't provided the model origin yet.