61. Start a YIMBY group. Across the country, pro-development, pro-housing fans are organizing against NIMBYs with unified YIMBY—that’s "Yes In My Backyard"—movements. Head to a YIMBY conference for new ideas.
This is a good approach for things like neighborhood diversification, small-scale shelters done as sharehouses, incremental density increases, small business incubation, bike facilities, etc.