When I set up objects around my classroom for students to draw from, I make it a point to make the most out of it.
The first square on the left hand side is Art 1, tissue paper collage, second square is Art 2-charcoal, third square is Art 3-charcoal and conte, fourth square is Art 4, colored paper, mixed media.
This particular project took about 2 weeks with 47 minute classes. This is from sketching to completion.