I really love this clock, made from a gear and beads. Simple idea, beautifully implemented, with a nod to worry beads.
‘clock’, made with a necklace
“each bead in the necklace is 5 minutes. the whole necklace is one solar day. the orange and red beads represent the whole hours. as the wheel turns, one bead falls off and drops down the string every 5 minutes. to tell time one must count the beads from the silver bead (midnight) or the golden bead (noon) to the last bead that fell off the wheel. the necklace can also be taken off the wheel and worn.”