Sorry to barge into Clive's thread but this is related and LAZ did ask for a pic.
I picked these carbon fibre mirror caps up on E-bay after reading about them on the Lotus forums.
(Bad influences those Lotus folk!) The Elise uses the same mirrors as the MGF/TF and there are a number listed,
at a range of different prices of course. I got my set at a pretty reasonableprice. (from a place in Texas if I remember.)
They aremade of real carbon fibre, not crappy vinyl, and are very thin and attach using double sided tape. The fit is good, not perfect though. (It probably depends who trims them after they are removed from the mould.) I sealed all but the bottom edge using black silicone sealant and they look good.
They would go really well with a Carbon fibre bonnet.