Change your Android's wallpaper to new book designs in r/BookCovers -

Connect

Turn your phone into a rotating art display/bookstore! When there's a new how post in r/BookCovers, the image will become your new wallpaper.

This Trigger fires every time a new post becomes one of the ten hottest posts in the subreddit you specify.

This Action will update the wallpaper on your Android device from the image URL you specify.