Hanging out with friends at the mall;Reading a book;Painting a picture;Listening to music;Using the laptop;Watching a movie;Playing videogame;Watching TV;Playing football (US: soccer);Having a picnic;Riding a skateboard (or skateboarding);Flying a kite;Surfing (the wave);Sunbathing on the beach (on because he's not in the sand or at a specific beach);Riding a bike (biking);Swimming.