[0] : Floating Electrons on a sea of helium : https://arstechnica.com/science/2025/10/new-qubit-tech-traps-single-electrons-on-liquid-helium/

[1] : Show HN: Roons -l Mechanical Computer Kit : https://news.ycombinator.com/item?id=43859464

Non-technical guide : https://minecraft.fandom.com/wiki/Tutorials/Redstone_computers