Park Volunteers Rock! From wiping out graffiti to planting trees (and lots in between) you have made your mark in making our parks shine. Some of the many volunteer opportunities include: •Cleaning Graffiti •Make A Difference Day •National Public Lands Day •Picking up Litter •Painting •Tree Planting •Weeding •Adopt-A-Park •Family Volunteer Days •Little Library in the Park. The Parks and Recreation Department welcomes civic organizations, schools, clubs, Boy and Girl Scout troops and interested citizens who wish to help clean, maintain and beautify our City parks. We assist corporations and businesses looking for employee service projects. We also work with large conventions visiting San Antonio looking for volunteer opportunities.