Film posters and post cards to spread films everywhere.
I guess it doesn't surprise anyone who knows me that there are some film posters in my apartment. They are not only beautiful but also make me remember some of my favourite films regularly.
Currently, these posters or postcards are hanging on our walls (approved by my husband, who may have been forced to watch some of them).
From left to right:
Rear Window (1954, Hitchcock), La Dolce Vita (1960, Fellini), Gone with the Wind (1939, Fleming), A Bout de Souffle (1960, Godard), Il Gattopardo (1963, Visconti), Birdman (2014, Innaritu);
Manhattan (1979, Allen), Dirty Dancing (1987, Ardolino);
Casablanca (1942, Curtiz) (seen in the mirror).

Besides that, I also have many old black and white postcards, some of which are displayed somewhere.
On here: Audrey Hepburn, Jean-Paul Belmondo & Jean Seberg in A Bout de Souffle; Humphrey Bogart in The Maltese Falcon, Jean-Paul Belmondo in A Bout de Souffle, James Dean, Humphrey Bogart & Lauren Bacall in The Big Sleep.
(To be fair, there are many other actors I would like to have more postcards of, but there is a much larger amount of items available for some icons, in contrast to some other great actors and actresses.)

And finally, this piece of art hangs behind a door, giving some useful tips what to watch next. Serves as a good riddle as well when hiding the title, as the illustration always shows an interesting symbol or prop from the film.