Have you ever wondered how you can have a personal desktop background using your own pictures an a slideshow?
There is an available background in Ubuntu which is Cosmos. This uses a script to give a slideshow of the pictures inside the Cosmos folder. You could do it the hard way by replacing all the pictures and renaming it with the names used by the Cosmos script. I've tried that and lost interest halfway through. I had a lot of pictures to put so it takes a lot of time to rename all of them and include it in the script, one by one.