I think sometimes you have to ignore the new technology and the internet! These things turn kids into zombies, who don't talk and forget how to..
I find that craft activities are great for getting children to all sit round a table together, (or even adults too; it's also great for us to express our creativity). We collect stickers, different coloured paper and shapes and scraps for sticking, and then they create lots of beautiful things! Simply providing coloured pens and paper is also good, as are colouring books.
Going for a walk to the park is another good way of bringing people together. You get the fresh air and the exercise, and that also helps people relax and talk. And of course food always helps, round the table at home, or out for a meal.