I see a lot of us are of the same mind. I use the expedit for storing some comics, some albums, and to house the spare TV and "non-HD" video game systems.
Sadly, the poäng got taken from me by the little lady because she found out how awesome it was. I'm looking into finding another chair for the office that is comfortable and more function at a desk.
There's a nice sense of accomplishment when you put together some of their more complex furniture. It feeds the desire to build until I actually have a place with some space to make my own stuff.
As to the OP's question. I believe there are quite a few people that posted things they used from Ikea for headphones stands such a rolling pin, paper towel holder, etc. I've seen some pretty cool ones around the forum