Many objects in real life are based on geometric construction. It could be art e.g. graphics or drawing, letters in a geometric style, a turning windmill as well as crop circles or plan of games , tangrams ...
So they can be modeled or movements can be simulated using GeoGebra.
Common project 2: puzzle factory - digital tangrams -> GO HERE
Common project 1: Movements in Real Life -> GO HERE
Project 3: Crop circles (GER) -> GO HERE