Old school pencil sharpener, I remember dreading to get up and sharpen my pencil in class. Everyone looks up and watches ya and then you take the pencil out and have to turn it a different way to get the other side sharp as well.
The classroom overhead projector. Some of these were still in use last school year when I retired from the teaching profession. I had only had mine out of the classroom for a year, when I went exclusively with the smartboard and the E.