Got any good object lessons?

I think it is never to early to start teaching evangelism. I would suggest having them memorize Titus 3:5, John 3:16, and anything else.

you can also have them make evangelism bracelets for themselves and for friends with different colored beads:

green for garden of eden
black for sin
red for the blood of Jesus that covers sin
white for the purity we become because of Jesus
yellow for the eternal life we will have forever in the golden city.

I always thought this was a cute thing. Tom, the man in my congregation who does many of the children's sermons was doing a thing on the verse "Whoever shall be last shall be first."

He got a bunch of those chocolates in the shape of gold coins. (Though it could be done with any little candy.) And he told the kids to line up in front of him. Naturally, all the kids wanted to be first. So then Tom gave the first child 1 candy. The second child got 2 candys, and so on down the line. So the person who was last got the most candy. He then went on to explain about the Bible verse. I think that was one of the best visual aids to demonstrate a Bible verse and I really enjoyed it.

As the kids went back to their seats, he did give those who had only gotten a couple candies more...so they wouldn't get too upset...but I think the lesson was learned.

I don't know how big of a group of kids you get...so it might be easier to use something like M&M's instead of larger sized stuff. But there's an idea for you.