Wycliffe has all kinds of free resources available. The best part is that they will mail them to you for free so you don’t have to print them off!
Wycliffe.ca — Missions-related lessons (Use the drop-down menu to find different lesson categories)
Ministry to Children – There are many lesson ideas on this site for various age groups and various environments.
KidsSundaySchool — Grade school – This is a membership site, but there are enough free resources to convince me to add it to this page. Look for the blue dots – those are the free lessons!
KidsSundaySchool — Preschool – This is a membership site, but there are enough free resources to convince me to add it to this page. Look for the blue dots – those are the free lessons!
I Can Talk With God Lesson Plan – This is a lesson I wrote for a preschool class.