Up to this point, we have showcased many beautiful wallpapers. Maybe you will get confused about what wallpaper should be used for your Desktop. Luckily, you can set your Mac to display random wallpaper with any interval of time.
The setting can be done inside System Preferences ▸ Desktop & Screen Saver ▸ Desktop. And the next step:
If you're connected to two or more displays, you can mirror your main display on the second display. Owning a MacBook, you will see your F7 key being embedded with icon showing two stacking blocks, that's the shortcut to activate mirror display.
Apart of that, you can also slowly set your Mac to mirror display via Display Preference Panes: