Go to boxing class, go to al-anon / AA meetings, walk, shop, play games, play cards, go to sporting events, talk, visit friends and family, read, go to the library, go the the boardwalk bar-b-q on the grill, ride a bike, meditate, sing, play pool, play foosball, vidio games, chat on-line, talk on the phone, watch tv, go to plays, take part in a play, take a college course, take a fun class, and go to the beach.
The can do pretty much anything drinkers do except drink. The list is only limited by your imagination.