This is a good answer. As a kid there were always ideas that I wanted to build, but I would for example not be able to construct the shape required in the worki

This is a good answer. As a kid there were always ideas that I wanted to build, but I would for example not be able to construct the shape required in the working space that I had. For example pieces like angle switchers, mixing holes for axles with other pieces, parts that allow things to slide etc.