159 Ottawa Brownies
We made finger puppets for the local Children's Hospital. I could send you a pattern. The Brownies used the glue guns (with the help of the leaders and a couple of Guides) and had sparkles, the Sparks had white glue and coloured markers (and help if they needed it, of course). All the girls know about the Children's Hospital, and most had been there, so the Service made sense to them.
We also had Sparks with us when we went to help sell the District's cookies at a local mall. Both Sparks and Brownies knew that the cookies we sold door-to-door were for "us", but the cookies we sold at the mall were to help with sending people to camp, paying for space rental, etc. etc. I've always assumed that Service to the wider Guiding community counts too.
We collected brown paper bags for the Food Bank - again the girls know that, either because their families have used it or because they done food bank collections at school. "Everyone" in the Ottawa Area collects pop tabs for wheel chairs.
It seems always to work best if the girls have some concrete sense of why they are doing service and who it is for.