I stumbled upon a couple of great websites with some fantastic ideas for getting more out of General Conference with Kids.
Mormon Mamma - Making Conference Memorable has some great ideas on ways to prepare kids for conference, and then to wrap up afterwards.
Linking from that page I found this great matching game of current LDS apostles, I did it in 1:00.3, that's one minute and a tiny tiny bit, with no mistakes, on my first try! Can you beat me? Match the Apostles - This comes from the LDS Greats website and it looks like they have a lot of great stuff.