I made this script for downloading Simon Stålenhag wallpaper from his website and store them locally and apply them as my wallpaper on my Gnome desktop.
Personally i combined this script with a systemd timer so the wallpaper is changed every hour.
python3, Gnome3 desktop or Ubuntu and Systemd.
This will set the desktop wallpaper to a random image
python stalenhag.rb
This will download all images on the website
python stalenhag.rb all
An example of a systemd timer and service can be found in the systemd folder.
For easy installation and removal you can use the scripts
# Install (prompts for root)
./install.sh
# Uninstall (prompts for root)
./uninstall.sh