The gerunds in the paragraph are:
- mowing (from "mowing lawns")
- looking (from "teens looking for part time jobs")
- mowing (from "mowing lawns and meeting neighbors")
- meeting (from "mowing lawns and meeting neighbors")
- spending (from "spend an afternoon")
- working (from "get to work in the sunshine")
- meeting (from "meet new people regularly")
So, the gerunds are "mowing," "looking," "meeting," "spending," "working," and "meeting."