Gaining visual ideas from collage painting

Very cool video on painting from collage in order to find your visual ideas.  I was amazed how big the students were working.  It must be very freeing.  We're working on collage and painting in Henry Sinn's class and I'm hoping to absorb some of his free-spirited ideas and break out of my rut.  I did two collages today but don't think they'd be useful in a painting just yet.  I'll just have to keep working.