Geo Backpack is a collection of Geometry Node-based modifiers designed for procedural mesh creation and editing. It provides five primary tools: a smart mask that produces smooth edges using a laplacian algorithm, a volume-based solidify tool for adding thickness to surfaces, two curve fill options (planar with intersection support and non-planar), and a curve connect tool that generates surfaces between splines. The package also includes four utility nodes for referencing objects or collections, assigning materials, and controlling surface shading. These tools are designed to be accessed through the asset browser for drag-and-drop use directly in the modifier stack or the node editor.