Artbreeder lets you create art – for free – that you can then use anyway you want.
Here’s how Recomendo describes it:
Using deep learning (AI) algorithms it generates multiple photo-realistic “children” mutations of one image. You — the gardener — select one mutant you like and then breed further generations from its descendants. You can also crossbreed two different images. Very quickly, you can create infinite numbers of highly detailed album covers, logos, game characters, exotic landscapes.
I’m adding it to The Best Art Websites For Learning English. That list contains lots of links to tools where I have ELLs create art and then talk and write about it.