So I removed the frames from the donate bag. Here's one frame.
Then I trimmed a plain piece of printer paper to fit. Did I mention that these frames were oddly sized?
The next step is securing the paper in the frame. How? I used duct tape of course.
Here's the finished product.
But why stop there? Here's one with lined paper.
And here's one with graph paper.
The possibilities are endless. You could do maps or a periodic table or a skeleton to label. I wish I had more frames. Don't tell the Historian.