Public signage turned into art and practical tools: safety warnings (Biohazard, Radioactive, Danger Electric Shock, Skull and Crossbones), public health messaging (Keep Your Distance, Hand Sanitizer, Vaccine, Man Wearing Mask), social statements (Black Lives Matter, Demonstrator), and practical signage (No Parking, Do Not Park Here, For Sale, QR Code). Stencils have historically been a medium of public communication — from military crates to street art — and this category leans into that tradition. These work in community organizing contexts, safety training environments, street art projects, and anywhere signage itself is both the subject and the tool.