I was a big Lego addict.I would also spend hours building elaborate "cities" with all variety of objects in the basement.
The bigggest things for me were making structures with things in the forest behind our home,and we had beds of gravel where I would organize patterns in the rocks,imagining elaborate systems of activity.
In middle-school I liked drafting and planned to be an architect.I still like maps,aerial photos,city plans,blueprints,charts,and diagrams.Oddly,I'm overjoyed when designs don't conform to rigid linear structure.Anomalies.Perhaps that's a way of entertaining a safe "anarchy",or simply imprinting from working with irregular,organic materials for so many impressionable years.