The church has put together a website (here) specifically aimed at providing games and activities for kids that help them keep focused/pay attention more during conference addresses. It looks fantastic!!
The primary general president, Sister Cheryl Lant, said, "Our goal is to teach children the gospel and to engage them in that process so that they really are interested and involved in learning and doing things." (taken from Church News article here)
All in all, I would say that this is a great resource for families. I can say that my wife and I have had a hard time trying to help our kids pay attention to what is being said. This is a welcomed help in that effort.