Yesterday, we had "Children's Sunday" at our church. At our last worship service, there was a panel discussion where the Children's Coordinator and I interviewed five 4th and 5th graders. Some of the things we discovered were very helpful.
You could probably guess that most of the kids wished that the sermon was shorter. (I always wish that myself, unless I'm the one preaching, then I seem to be able to babble on forever.)
What most of them liked the most about church was taking Communion. And many of them wished we took Communion more often.
I thought the Communion thing was very interesting. Upon reading the New Testament, it seems to be clear that the believers met together and partook of the Lord's Supper (Communion) every week. It seems that was the main reason they did meet every week.
I'm not sure why we got out of the habit of doing it every week in many churches. Probably because pastors who thought they were very important thought they needed more time to preach!