My near-nonegenarian MIL's neighbor kids have done stuff for years that helps her. Little stuff like they take her garbage bins to the curb for pickup every week. Not much effort frothe kids but it is a big deal that they do this stuff. Over the years thay nad their mom have grown a close reationship with the MIL. Like we have more relatives now.
My cat rescue org uses Junior volunteers. They clean cat messes and spend time socializing the cats to make them more adoptable., The HS aged kids we've had have been a joy. I imagine similar orgs in other towns do this.