You can read the ariticle from the Ensign here ---> Preparing Our Children for General Conference.
To read the ideas found in this article but in a more condensed form you can read this document put together by Kate found on Sugardoodle.net.
In addition to this great article filled with ideas are these great activities to keep your children involved during Conference:
2009 General Conference Packet by Melanie Day.
Here is my post from the last General Conference. This post is filled with links to many activities, some of them will still work this time but others will be missing some of the changes.
I hope this helps everyone get ready to have an enjoyable conference experience with the whole family. I'll be sure to post more if I find more packets and activities and would love to hear what traditions or activities your family takes part in each time Conference rolls around.