This document discusses several patterns used in permaculture design in California, including contour planting, roof catchment systems, and using salvaged materials. Contour planting involves planting along contour lines and digging ditches to prevent uneven water distribution. Roof catchment systems capture rainfall in water tanks to reuse water, aided by a filter system. Salvaged materials are reused in constructions like a pizza oven to minimize waste. The document also discusses how the patterns of neighbors/strangers and communal labor are interconnected - communal activities at the site bring together people from the community and beyond. Finally, the document notes how communal labor is part of the author's life through group projects in school and assisting employees at their internship.