The children love making sun prints. We made them a few years ago and they wanted to do it again. We used a kit but the kids took a class recently and one day they made them by using treated paper and dipping them in vats most likely similar to this.
We used phlox, black eyed susan, grapevines, blackberry, cosmos, nasturtium, pansies, zinnia, dusty miller, bachelor buttons and hydrangea. I love the way ferns print but, we did not have a good specimen.