The Comittee for Social Justice of the Algonquin and Lakeshore Catholic District School Board in Ontario, Canada has a number of useful resources on Catholic social teachings on the environment, water, peace, poverty, and HIV/AIDS. Also available are posters for downloading and printing. Many of these are specific to the situation in Ontario, but some can be used as is or with minor adaptations to fit a wider context. See, for example, the poster called "Being the Body of Christ" which illustrates in a very concrete and contemporary way the prayer of Saint Theresa of Avila, "Christ has no body now but yours..."
For more resources: Catholic Social Justice Teachings and Resources