Honeycomb Clock by Nils Kal.

Print your own stylish honeycomb clock - the model is quite easy to print and won't need any supports.

There is a 9mm center hole, use the following or similar clock mechanism: Amazon Link

If your clock mechanism doesn't come with a wall hanger there is also a version with a provided wall hanger.

You can print this either single or multicolored (the presliced .gcode has a stop code for the multicolor version - no MMU required!).