I know it's a fairly common one this forum, but this is a collection of audiophile toys, some of which I hadn't heard of before:
http://www.ilikejam.dsl.pipex.com/audiophile.htm
My favourites are:
* audiodharma CABLE COOKER™ (Stereophile Recommended Component for 3 Years Running) $689 standard version, $789 professional version
* CABLE ELEVATORS PLUS (SET OF 8) $160
"The damn things do lower noise, increase dynamics, remove haze, and open up the top octaves. Once you listen to their effects, even a skeptic like me has to admit that it is hard to take them back out of the system. Music sounds more like music with the Cable Elevators in place. I recommend them strongly, especially given their price!" — Jonathan Valin, The Absolute Sound