Download copies (five different sizes) of the original poster by John Lennon & Yoko Ono at Imagine Peace. There are 100 versions in languages other than English. We bet your family & friends would love to have one (they don't know it yet, that's all). As a bonus, Happy Xmas plays in the background. Pretty nice deal, eh? (images via Imagine Peace)
Visit Imagine Peace & send your best wishes in honor of John's 70th birthday. Also, remember to play The Beatles (always!) & dance wildly like Giulia. (It helps.) 
We were reminded of John & Yoko's Happy Christmas card in the New York Times a few days ago. Go here to download the poster & for news. [Image courtesy of www.IMAGINE PEACE.com]
You can download various sizes of the poster, watch videos, & explore Imagine Peace site, here. Here is Yoko Ono's Christmas message. Thank you to Susan of heysusy for the idea. Like her, we think it's fine to leave up the poster year-round.