Brush roller, plastic with cover, smooth, does it have knobs or places to perhaps insert limbs to make a tree?
If you describe the hair roller maybe some of us could help with a few ideas. Clough's idea is good about adding environment out of other things for an animal, space ship, tree, whatever you go with on the hair roller. I had to take methods classes for Elementary Education Courses toward a teaching degree but I did better in Secondary. One has to just sort of go back to childhood in their mind and study the piece you are looking at. As children, our imaginations are not hindered by so much reality. Good luck.
By printmaking are you referring to using linoleum and cutting out your design in different layers, using ink over the top layers to define your piece? Perhaps if we had a more clear understanding of the medium you will be using, we could come up with a few ideas to help.
Even though I know these projects have to be from your own creativity, just hearing ideas from others will probably trigger a number of ideas in your own mind. Sometimes we just need a catalyst to give us a jump start.
