Are you on the lookout for a good tract for children? For the past few years I have used a small booklet by Matthias Media called "Who Will Be King?" It is very good tool as it shares the gospel beginning with a BIG God. The folks at Matthias Media have given several ways you can use this booklet here. I have also developed a PowerPoint presentation to use with this tract that you are welcome to use. Just email me at firstname.lastname@example.org and I'll send it to you.