How to Build
- Take a medium-sized cardboard shipping box and cut two 6-inch circular holes on opposite ends.
- Install flexible rubber or vinyl door flaps over both holes to keep out wind and snow.
- Use scored side creases so the box collapses into a flat sheet when the floor flaps are unfastened.
7. Triangular Geometric Pyramid Pod
A stylish modern pyramid shelter that uses interlocking cardboard tabs instead of tape, making it completely collapsible and tool-free.
