I've always found the tweaker community on that site to be a great source of entertainment. Open up your headphones, put some blu-tak in and then they're the best headphones ever! Or drill a hole in the earpiece, put in a screen and make it an open phone! Or machine out some wooden earcups to replace the plastic ones! There's a big market for that stuff over there.

And don't get me started on the cable and speaker forum over there. Some people would lead you to believe that the absolute baseline price for good cables is $1k.