This is me enjoying the Digilab at the Open University.
And this is the monitor for the demo computer at the Digilab.
Unfortunately the last user at the Digilab disconnected it and the tech support could not for the life of them figure out how to reconnect it. There were an awful lot of wires behind it.
So much to the pleasure of my audience I gave an old fashioned face to face tutorial with no visual aids for half an hour. It seemed to go well.