Build a binary clock
What's a better way to show everyone your extreme geekiness than sporting a beautiful hand crafted binary clock on your night table? This site gives you the parts, and lays out the circuit diagram for building this masterpiece of ingenuity. Although the circut looks complex, with the guide at hand it should be a breeze. It even has an AutoCAD drawing. The site does assume you can solder logic gates. Now if I could only read the time.
>> http://www.hanssummers.com/electronics/clocks/binary/