1. If you are like my school, you no longer use an overhead projector. When we stopped using the overheads, I was left with a lot of transparency film (I never throw anything away...Someday it might be useful.). This is perfect to fit on one page of the student's textbook. Now their is a page to write upon.
2. Along the same idea as above (but much cheaper), use sheet protectors. Cut them in half - 2 for the price of 1! You could also keep them together and slide the book inside (if it fits).
I prefer dry erase makers over Vis-a-Vis markers. There is no messy cleaning with them. Skinny dry erase markers are better since they have a skinny tip. However, I think they dry up way too fast. With the money I put in, the students can just make do with the fat ones!