Every year I try a new way to display my cards, but I'm never completely happy with the results.  Usually it ends up taking more time than I wanted to spend, and who has a lot of extra time at the end of the year?  So this year I tried something new, and it's easy.  I took some long ribbons I had in Christmas colors, and attached them to both sides of two doorways.  When I get new cards, I staple the top of the card to the ribbon, working my way down the ribbon.  It looks great, and I like the fact that you are able to see the cards clearly.