You can just tell it the folder to use for wallpaper and how often to change it. It's not a 'collage' like multiple images at once, you can have it sort of stretch them to fit, tile or whatever.

Live wallpapers might not be as cool as they used to be when the iPhone 6s came out, but in case you want to use a movie as one – there's an app for that.

How a giant collage remixes blockbuster movie iconography. It’s on view in El Segundo The “Experience 51: Time” exhibition at El Segundo’s ESMoA art lab.

Cinema Posters, a new wallpaper design from Weitzner, is editing in the extreme: Bollywood movie posters from India have been sliced up and stitched back together as art-house wallpaper.