Jane's shoes when she is at Joe's art show.
The cover and position of the picnic hamper on the Brooklyn Bridge.
Jane's blouse and Joe's shirt after they have been making out in her apartment.
The roses in the final scene when Joe hugs Lucy.
When Lucy looks at the calendar at the end of the movie she sees the final day and the painting is to the side. She doesn't move it before she leaves, but when the return shot shows the painting it is moved to block the final day.