A cat, a book, and i think even a girl. Mr. Garam is cunning, cunning man.
(Note: 2019 November, default English answer by Duolingo is "Let's not leave pictures")
-- There is a slight difference in meaning. "Any" is not required in English. Its special use puts the focus on the one type of thing, the photos.
(Of ALL THE THINGS here), Let's not leave photos.
(FOCUSING on the one type of thing), let's not leave ANY photos.
Note: in English, photos is specific but pictures can be photographic film, digital images, art work painted by hand, or movies.