I thought the model of 3D printing models of the chips to be a really cool way of visualizing how these chips work.

From the YouTube summary

How does your phone track its position in space? MEMS devices! Phones use small micro mechanical chips called MEMS, to monitor accelerations and rotations. These are fabricated using semiconductor technology, but are tiny little moving mechanisms.

Today we're decapping a six axis IMU (MPU-6050, on a GY-521 breakout board, containing three accelerometers and three gyroscopes), looking at it under the SEM, printing up some models, doing some high speed video recording, and talking about how these little MEMS devices work.

CAD/STL models (fair warning, it's a very challenging print!): https://www.printables.com/model/413667-mems-model-six-axis-imu-device