I built a LEGO model of CROCUS, a zero-power nuclear research reactor at EPFL in Switzerland where I teach. The model reproduces the core, control systems, and instrumentation, and we've been using it in university courses with measurable results in a published study, and also featured on Brickset: https://brickset.com/article/130024/lego-as-a-teaching-tool-does-it-actually-work A French science YouTuber recently featured the reactor and the model in a 37-minute video (100k+ views, English...