You can make beautiful dials for wall clocks from plywood or Forex (pvc hard foam). For the clockwork a simple quartz clockword you get a replacement part will do. On these makes the dials have a recess of the back and the clockwork is fastend with hot glue or a fabric tape.
This simple construction doesn't needs to be glued at all. The tight fit allowes the parts to interlock. A selflocking nut on the backside let you choose the tension, that the watchhands can be turned but wioll not move non their own.