The Social Business Model Canva is a simple and effective too which can help social innovators in shaping their social business idea. It has been inspired by the well-known Business Model Canva, and specificaly tailored to meet specificties of social businesses and social entrepreneurs or aspring ones:

The Social Business Model Canvas is inspired by the Business Model Canvas and created by the Social Innovation Lab.
The goal is to support social innovators by designing their Business Models. Social Businesses focus on the impact they create for beneficiaries rather than creating profits. Therefore, the tool takes additional aspects into account which helps in creating a social business model.
The Social Business Model Canvas is divided into 13 building blocks. In comparison to the Business Model Canvas it takes the following aspects into account:
Consolidate your learning, looking at this video here: