I collect vintage postcards and change them with the seasons out of 4x6 picture frames.
Pick a subject you like, and look for vintage postcards that have that topic reflected in some part of the vintage postcard.
My collection includes vintage postcards with flowers, birds and cats. You can also collect different picture frames to compliment postcard colors. Vintage with modern makes a nice combination. This vintage postcard is framed on a table next to my front door so I can see it every time I walk by.
From my home to yours, may you have a very Merry, and interesting, Christmas!