Leap Frog Learning Leap Pad

I know this is the oldest thing from Leap Frog, but my kids love it. I bought this huge kit for my son when he was 4 or 5.  He played with it a little over the years, but now that he's 8 he can't put it down. Maybe it's more exciting now that he can actually read and follow along. His little sisters love the letter cards and books that came with the kits. They have been playing with this stuff nonstop since we pulled it out yesterday. It's educational so I don't mind a bit :)