Traditional volunteer models often rely on sign-ups, formal roles, and structured programs. But for many people, especially those who are neurodivergent, disabled, overwhelmed, or simply stretched thin, those structures can create barriers rather than invitations. This session introduces the concept of curiosity infrastructure: small neighborhood “third spaces” designed to spark connection, generosity, and participation through simple, visible micro-infrastructure. What began as a single salvaged cabinet turned Little Free Library revealed something powerful: when resources and spaces are placed within arm’s reach of neighbors, people naturally step into stewardship roles. Books are exchanged, supplies appear, conversations begin, and strangers become neighbors. These spaces also function as low-pressure entry points for participation, allowing people to engage on their own terms and at their own pace. For neurodivergent and disabled community members, this kind of flexible, informal engagement can make the difference between exclusion and belonging. From this small experiment has grown a rapidly expanding network of neighborhood sharing spaces designed to activate organic volunteerism without formal recruitment. Participants will learn how accessible third-space design, micro-infrastructure, and curiosity-driven systems can lower barriers to participation and create more inclusive models of community engagement.