Advent season goes geeky

What better way to celebrate the Advent season than with something geeky – like this advent wreath which is made up of half a dozen parts as well as a paper clip? It runs off a CR2032 3V button cell, where the circuit is free-formed courtesy of a paper clip as the conductor. There is also the inclusion of an ATtiny13 microcontroller that throws in another level of intrigue for the uninitiated. At least this follows the waste not, want not adage!