I miss when stores in malls and the like would have weird contraptions of that sort (mobiles, pendulums, ball/marble race tracks, etc.) to catch your eye.

I like the model railways in some large stations in Europe.

For example, here's the one at Copenhagen Main Station:

https://en.hovedbanen.dk/currency-services/model-train-track...

Me too. However, I'm glad I never used one of those X-ray machines they had in shoe stores of the past: https://en.wikipedia.org/wiki/Shoe-fitting_fluoroscope