One of the most magical AR demos I've ever had a chance to see was Tilt Five at Augmented World Expo 2021. Jeri Ellsworth stumbled upon a complete paradigm shift towards AR while she was at Valve and accidentally had a beam splitter turned around and it was shooting beams of light that happened to hit some retroreflective material another Valve engineer was experimenting with. She saw a beautiful, high-contrast image that inspired her to continue to develop this idea into a fully-fledged, tabletop gaming focused AR headset that she was able to acquire from Valve after getting fired, go through another startup cycle of beginning and ending of castAR with too broad of a focus, and then eventually into Tilt Five, which has been much more laser-focused on tabletop gaming.