Uses a standard 55mm clock movement in the center. I recommend picking a silent “Japanese” one.

You can buy filament samples in lots of colors by searching for “3D pen filament”.

Just use superglue to assemble everything.

Link to full CAD model : https://cad.onshape.com/documents/ab70658aab28c30f09fb5375/w/0a83da0d904568396b23e5d3/e/74b6613903f841ab1e258b0b?renderMode=0&uiState=664e323ff9d5860e743410a0