I was surprised to be hired to do production stills on a TV commercial, because I was pushing the idea for a long time. The director of the commercial was happy with the results, so much he ordered more prints than he originally wanted. I do post cards for promos for actors/ directors/ movies etc. which can be mailed out with your proposals or put as an attachment in an email so they can be views or printed. Don't over look these possibilities when promoting your next film or yourself.