Simulated random dice throws generated in response to radioactive decay: Streams of ticks from the Geiger counter are turned into random numbers and flip dice in this grid. Einstein famously said God does not play with dice in his rejection of quantum mechanics' core principles of probability. So it seems natural to express the fundamental unknowability of the universe that can be found most clearly in the atoms of Uranium with turning dice.
Also Dice Tunnel
Random dice throws generated in response to radioactive decay.