Sold my 2000 528 and I have a few things I don't need any more..
* BMW roof rack. screws into the 4 posts. Paid $199.
* Cup holders. Carved wood; slides into the center console storage slot. Sturdy; never spilled anything. 2 slots. They sell new for $68.45 here as
5 series standard cup holder
* AUX converter to run an MP3 player out of the CD-changer box. Logjam sells it for $99 --
picture and description here
I'll sell any for half price or best offer.