This is kinda cute:

It's a knitted power cord which, naturally, you can't actually use, but which you can wear as a skinny scarf or a belt (you know it would be the perfect accessory when you sit on that SXSW panel), or as Geeksugar suggests, you could use it as a geekalicious curtain tieback (in your tech-filled office, perhaps?).

It comes in white, beige or black for $25 from KnitKnit on Etsy and could also be the perfect gift for the geek in your life...