The study presented in this paper is part of ongoing research that is exploring how digital design tools and technologies can support waste cardboard reuse for manufacturing architectural elements in a context of scarcity. For this study, we explore the use of a parametric design tool to design and fabricate three different architectural components using waste cardboard sheets: acoustic panels and two types of formwork for concrete. This design tool maximizes the smart reuse of a waste material and aids in the fabrication process by outputting instructions for cutting, scoring, and folding. This paper also demonstrates how parametric design tools can help reuse non-standard (dimensions variable) waste materials, mediating between measurable material conditions and desired material targets for designs.