Here's one for you.
What you will need are the following: an unused photo frame, scrapbook paper and a pair of scissors.
Cut the paper to the size of the photo frame, and put it in the frame.
That's about it. You can even write on the glass with a Sharpie permanent pen, and erase it using a Swiffer refill pad.
It works! See?
PS - I'm not sure if a permanent marker can be erased using the Swiffer refill pad on acrylic or plastic.