boys care children community enjoying enjoyment fun girls grass grassed area green kids park play play area playground recreation recreational safety sand sandpit suburban suburbs supervision swings high play-area swing swinging active activities adventure children’s-playground climbing equipment families greenery lawns leisure light parks playing shade shaded shadows shady slides sunlight sunshine trees children’s-play-area grassed-area blue colorful colourful holiday-park holiday-resort open-air playground-equipment safe-play shelter sheltered supervise under-cover youngsters