This collage began by generating a misty photo of a field of wildflowers for the background in Keynote. Then I started layering the other AI generated elements on top, adding transparency to each picture as desired. One advantage to using Keynote to make the collage was being able to use "Remove Background" and "Magic Lift" to cleanly cut out the background of the layered pieces. Finally, I added text to explain about the collage. You could extend this idea by having students record their voice in Keynote. They could read a poem, a quote, or simply explain their ideas.