The tree that takes up no space. We prefer a real tree, but if you have a closet-sized apartment or you're dreaming of an ultra-mod Christmas, check out this Christmas Tree Vinyl Wall Decal ($24) from Etsy shop Subhuti. We're a little sick of the decal trend, but we could see how this could work for a very Jetsons Christmas.
Large Christmas tree decals are 28" high, small ones are 8" high. Place the ornaments wherever you want, and peel off the wall after the holidays are over. Decals are not reusable.