It’s a great feeling to watch your kids growing up to be teenagers. And proudly see their graduation. What a fantastic occasion to surprise them with something special! But how can you entertain such big children, who prefer sitting in front of a screen to playing board games or treasure hunt in the backyard? And how many guests can you invite if you only have a limited number of Playstation games with only a couple of consoles? And basically: what on earth will make the young say...