cubomania is a collage in which pictures or images are cut into squares and the squares are then reassembled without regard for the image, at random.
decoupage. one cuts up smaller images or portions at random, and rearranges them to create a new image or text. The cut ups are used to offer a non-linear alternative to traditional reading and writing. Dali used a lot of decoupage in his early work.
décalcomanie. a decorative technique by which engravings and prints may be transferred to pottery or other materials.