Customized the spirographic coasters to make a beautiful clock face. There are twelve points on the edge to match each hour. It curves out of the wall so you can fit the clock gearbox behind. Just buy a regular clock mechanism on Amazon:

https://www.amazon.com/s?k=clock+mechanism&crid=12T1TOB1EVK4D&sprefix=clock+%2Caps%2C164&ref=nb_sb_ss_p13n-pd-dpltr-ranker_ci_hl-bn-left_1_6

Attach the hands and hang it on the wall!