This is beautiful Sandpiper. I've been trying to figure out a way to display all my Christmas cards but didn't find anything I liked in the stores this past Christmas. Your card board is perfect! We hang our cards on the back door (which is in our living room), so if we hung this vertically, and custom designed it to fit the door's dimensions, it would work perfectly. Thanks for sharing this - and I especially like the timing - I wouldn't have had time to consider making this just before Christmas, but sharing it here now gives us lots of time to buy the materials and put it together at leisure.
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When you don't like a thing, change it.
If you can't change it, change the way you think about it.

(Maya Angelou)