Inviting participation is a matter of giving them choices, often only two choices. So in our make-a-monster assignment I walk these students through each step by asking questions.
"Do you want your monster to be on a yellow or blue piece of paper?""Do you want your monster to be tall or short?" (vertical or horizontal paper orientation)
"Do you want the body to be soft or rough?" (felt or upholstery fabric or burlap)
"Do you want the body to be purple or green?"
"Do you want the body to be a circle or a square?"
Questions continue about head, hair, arms, legs, feet, eyes, mouth, etc. until the entire figure is completed.
When I have a student with echoalia (who always repeats the second choice back to me), I ask the question a couple times changing the order. For a nonverbal child with no sight, I move their hand from one option to the other, and then have them touch their choice. One of my students carries a communication device with preprogramed buttons, so I ask only yes or no questions. "We have ribbons and tape. Do you want to use ribbons for legs?" If she pushes the "no" audio button, then I ask, "Do you want to use tape for legs?"
Every student is expected to help me squeeze the glue, position and pat down every collage piece. The most important thing to me is that each student takes ownership in the finished piece and does as much work as they can possibly do on their own. Progress is very slow, but when I see one of these students use a pair of scissors, or learn the word, "collage" I feel like I'm Anne Sullivan, living a scene from "The Miracle Worker"!