White dwarf clock
How will we measure the time when our sun goes out? The hypothetical last stage of a solar-type star is an extinct white dwarf. Our Sun will one day begin to grow larger, engulf the planets, including Earth, and eventually explode into a beautiful nebula, itself remaining a small extinct dwarf. No one will ever worry about what the hands of the dial say.
The acrylic painting has a final protective spray and is signed at the bottom. The canvas is glued on machine glue and inserted into a functional circular clock Ø 30 cm. The clock is powered by one classic pencil battery and has a hole for hanging. So all you have to do is hang it on a nail!