When I say "fancy" I actually mean "LCI"
I noticed that some LCI e9x's have chrome or brushed alu dials for volume and climate, which I liked as the dash in my non-nav 2005 was looking rather dull as standard.
The volume knobs can be purchased from the dealer for £9 each (better than the £15 each one guy on ebay is asking for them after buying them in bulk from BMW!) and are just a pull off/push on fitting.
The climate dials can't be purchased alone, they are part of the unit. You can either just buy a new (£350+!!) or second hand climate unit with new knobs and fit it in place of yours, or you can get a unit with the new dials and swap the dials only.
I got one on ebay I just swapped the dials - simple job of unclipping the fascia of the unit and unclipping the buttons, removing the dials and reverse to refit. Although the one I bought was in fine condition, mine is actually in brand new condition so I wanted to keep it. I tested the one I bought - it worked fine so put it up for sale and got rid of it (with my old black dials on it) for £10 less than I paid for it with the chrome dials.
Here's the pics:
This is a standard one (sure we all know what they look like)
Here's mine now:
