Retrotastic: Wireless Router with Old School Analogue Utilization Meter

Want to know how much of your bandwidth is being chewed up when you download your torrents porn Wikipedia entries. This old school hacked up Tachometer sits passively on your network just sniffing traffic as your cable company get aggravated.
Easy to create your own version so long as you have a soldering iron, multimeter, oscilloscope, scroll saw, table saw, carving chisel, and mortising tools. Oh, don’t forget the engineering skills :)

That is very cool.