In Pearl Harbor (2001): from one scene where the nurses are on a transport ship, you can see the USS Arizona memorial in the background (wasn’t built until after the war in 1962) if you look closely even though the movie is set in WWII. That’s not the only historical anachronism I’ve seen: a speed boat during a romance scene (not available until 1950s) plus incorrect aircraft variants (too modern for 1941).
The naval vessels docked are definitely NOT from 1941 as I can see they’re too advanced (like comm towers) for that era (Michael Bay definitely didn’t do his homework). He basically remade Titanic (yes, it has romance involving Ben Affleck & Kate Beckinsale) with a WWII skin on it. The flashback sequence at the start depicting 1923 features a crop duster (not commercially available until the 1930s).
In Once Upon A Time… in Hollywood, which is set in 1969, there’s a close-up scene of a turntable with what looks like an Audio Technica AT3600L cartridge installed. As far as I can tell the 3600(L) didn’t come out until the late 70s.
Edit: On second thought, the 3600L looks pretty similar to the ATP-1, which came out in 1962.