Thirty volunteers came out to the Brown and Healey Schools on Thursday, September 17 as part of the 5th annual Tech Give Back-a day of service for Boston technology companies, coordinated through TUGG (Technology Underwriting Greater Good and Building Impact, a partner nonprofit. Volunteers spent the day enlivening two schools’ playgrounds, painting a large kickball court, putting in new four-square courts, hopscotch and a soccer pitch, and repainting basketball court lines. Students watching the progress chimed in with what else they’d like to see on their playground: “gridiron lines!” “another four-square!” … and TUGG delivered.