Cellar Stack is a modular luxury packaging system inspired by Mumbai’s iconic tiffin carriers. Reimagined for wine and spirits, it transforms a humble everyday object into a reusable, insulated vessel. The cylindrical form uses a triple-layer stainless steel–copper–stainless steel body with foam inserts to secure and thermally stabilize bottles. A threaded twist-lock allows removable layers to adapt to different bottle sizes, while the top module stores wine accessories. Cellar Stack elevates functional heritage into contemporary packaging design.