I always wanted to do this project with my students but I was unsure of how long it would take and I was unsure of the difficulty level. It's actually quite simple and doesn't take too long. My students really liked this project. I found several versions of it online from Pinterest. This one in particular stained the copper- https://www.flickr.com/photos/jmhurt71/3029738313/in/album-72157603462766974/
I was unsure of what to use so I didn't have my students stain it. I think it looks quite nice the way it is. If anyone has any suggestions please let me know. Thank you.