I have been involved in facilitating groups for decades. One of the tools I use for groups of adults, teens, or children are photos. I use photos as a way for folks to become familiar and used to talking and sharing in a group. As a way to indirectly share something of themselves by talking about an image/photo. As a way to begin a conversation about larger issues or deeper issues.
One set of photos I use are Rough Road/Path photos with alcohol addicts and heroin addicts in the beginning of recovery. I spread the photos out on a table and ask the group (usually 10 to 15 men) to pick out one photo that represents their journey in the week or weeks before they came into rehab. Once everyone has chosen a photo I ask them to (one at a time) hold up the photo, describe the photo and why they chose it. The descriptions and stories they tell come from them, their experiences and begin the process of revealing a bit about their lives.