A true minimalist/modernist would probably seek to deconstruct Christmas (see office Christmas tree last year). We went with a real tree (the first time in our adult lives) and a monochrome theme (white and silver with a lot of owls). We also jumped on a CB2 wreath idea (silver balls with pink wire), a West Elm wreath (lots of woolly balls), and simple LED "icicles" that "snow down". I think we'll leave it at that.
Oh! And we hung some stockings! Since we have no mantle, we hung them from the window (The World Is Our Mantle.).