In the UK, this is considered high treason.
The fear of returning to the hardware store is deep in this one.
Yes, that is an overhead projector combined with a dismantled LCD screen. Try not to think about it too much. I did and had to leave early with a severe migraine.
This could be the best use the teacher could find for the textbooks? We fixed it. Now students have to open their books again.
Steal 3D glasses from the theatre. Buy two pocket projectors. Borrow a tripod from your "aspiring photographer" cousin. Kludge them all together after pirating any James Cameron "film".
.... no profit