If you ever are in Paris, I can't recommend the Musee des Arts et Metiers enough. I believe they have the several reference platinum kilograms that are now out of spec. [1] they also have the original actual Foucault pendulum that was used to demonstrate Earth's rotation. (and a replica doing a live demo, of course)

They have so many incredible artifacts (for weights and measures but also so much more: engineering, physics, civil engineering, machining,...)

[1]: https://collections.arts-et-metiers.net?id=13404-0001-

On the topic of tricking the automated phone usage detection cameras this youtuber had an entertaining video where he built a car phone holder by molding his hand and making a replica.

https://youtu.be/Ud8kFCmalgg

> Based on 50 Cent's name being coined

I see what they did there.