Another fun idea - if you're short on space or time this year or for those going away for the holidays but still want inspiration before they leave; draw out a tree on kraft paper, then decorate with a string of lights and a few baubles! Reminds me of the post-it note tree or chalkboard one last year or the wall one from All the Luck in the World we posted about back in '08! (Image from Chatelaine by Virginie Martocq).
Check out our last year's Holiday Decorating posts here!