For my Drawing on the Right Side of the Brain course, Betty Edwards includes a view finder containing an overhead projector sheet as one of the materials. I assumed any sheet of plastic (i.e. a plastic sleeve made for a binder) would work, but now I discovered she wants the reader to write on it using a white board marker (and wipe it off afterwards). Any ideas on how I can get a one or two overhead projector sheets, or else, are there any easy alternatives?
Go to your nearest middle school or high school and ask if you can get a couple of sheets from one of those teachers or something. When those sheets gets a little too clouded or overused, teachers tend to throw them away and use newer ones. U can ask for the old ones. Hope this helps.
Try an art store. You can often buy individual sheets of various kinds of paper and other materials. The ghetto way would be to scour your home for transparent plastic from product packages and see if any of them work. Lots of things come wrapped in clear plastic, especially electronics. For example, a brand new laptop usually has a clear plastic film over the LCD for protection which would probably be ideal.