I have a white vinyl static cling sunroof graphic for sale, complete with instructions. It's never been used, and is color-matched for a MINI with a white roof. It's solid, and can be removed an re-applied multiple times. If you live someplace hot and sunny, this could help you keep your interior nice and cool.

I purchased it for $80 as part of a group buy before I got my MCS. You can have it for $50.