Loose Parts is a toolkit for designers to explore interaction among products, users and designers. The objects here act as material signifiers for products and prompt reflection on the thoughtless that are afforded by the objects. Interaction with these signifiers is observed to understand user demand and expectation in product design and build a material library for future design to be used by the designers utilising the experiments. the combinations, associations, and interactions provide insight into the cognitive understanding of form and use. It can help designers discover more possibilities within their product design.