Not that we would desperately need one; our online calendar works just fine, but something on the wall as a tactile reminder of the passing of time would be nice.
Maybe one of these:
|Stendig Year Calendar by M. Vignelli in 1966 (!!) - get it here (US) or here (Europe)|
|The Vertical by MAKE Collaboration - get it here|
|Stitch the Stars Calendar by Heather Lins - spotted here - get it here|