I got a lot of ideas for decorating my home for Christmas from my favorite Christmas movies. In Holiday Affair (1949) the heroine's in-laws have strung all their Christmas cards in a thick garland across their mantel. For me, 1949 is just about the tail end of my favorite period, but since the couple in question was in their 50s, I assumed they were carrying on a long-standing tradition. So I copied that in my home, though I have to say I don't get nearly enough cards these days to make the garland look quite as impressive.
I'll send you one! Seriously, I'm making 1930s and 1940s Christmas cards from vintage images I photocopied, and I am willing to send one to any F-Lounger who is willing to reciprocate.