YouTuber Kensuke Koike demonstrated a very clever collage trick with a hand-cranked pasta machine and a photo of a dog. After sending the photo through the pasta machine, he arranged the resulting strips into a duplicate of the same photo. He then put those two photos together, sent them back through the pasta machine and created four of the same photos from the strips.
Go buy a pasta machine, it’s fun! You can easily obtain stripes to make a collage, you can also weave them.