I agree, the Foucault example would make a good Juypter demonstration. Showing the pendulum in 3D with a 2D projection (like a Spirograph) of the motion on the ground would be especially nice, as in:
I worked through SICM using sicmutils as a backup. The MIT Scheme version sometimes "locked up" on my solutions to exercises and sicmutils did not (the Foucault pendulum problem comes to mind).
This video is an introduction to SICM and sicmutils:
https://demonstrations.wolfram.com/FoucaultsPendulum/
This might be possible in a Jupyter notebook with WebGL.