ParentFull threadmsk-lywenn·Buenzli/Demodays OHP (overhead projetor) competition has many of thosehttps://www.youtube.com/watch?v=6G5rTavyx7Ahttps://www.youtube.com/watch?v=AZ39obFzaQshttps://www.youtube.com/watch?v=LCIsIfEOEI8View on HN