Delux Wireless Vertical Upright M618
This one is beautiful! On Amazon, the product name has “Dark Fleur”. The word “fleur” means “flower” in French. Apparently, this is part of a series of Logitech's “Fantasy Collection”. There's a matching mouse.
Microsoft Natural 6000 Ergonomic Mouse
As of this one is no longer made. Replaced by Microsoft Sculpt Ergonomic Mouse 6000