DeepDream is a computer vision program created by Google engineer Alexander Mordvintsev which uses a convolutional neural network to find and enhance patterns in images via algorithmic pareidolia, thus creating a dream-like hallucinogenic appearance in the deliberately over-processed images.
The base images are all from artworks that are in the public domain. You can use the generated images under the creative commons license, or generate your own.
Yes, there are many tools availible, like https://deepdreamgenerator.com/ or https://aiartists.org/ai-ethic
Probably