The first thing I want to do is tell you that I know that this is Heavenly Father's way to help us be healthier and happier. When I was preparing the lesson for our class, I wanted to find a way to teach them that if they obey the Word of Wisdom, they will have more freedom all their lives, and if they don't, they will lose some of their freedom.
Disobeying it even one time can lead to becoming addicted to things are not healthy. Addicted means wanting something even when you know it's not good for you. Addicted means that you lose some of your freedom to make good choices and to do things that will make you happy.
Grandpa and I taught them the story of Daniel and his 3 friends (in the Old Testament) who were brought with other Jewish boya to the King's palace to be trained as future leaders. The King commanded them to eat foods that were too rich and to drink wine. Instead, they ate fruits and vegetables and grains and drank water (as their parents had taught them.) After a while the king found that Daniel and his friends were more skilled and wiser than the boys who ate the way the king wanted them too. You can read the story in Daniel 1. Verse 17 tells you how they were blessed.
Next we made bag puppets like this:

We used lunch bags and drew faces with markers so that when we put our hand inside to open and close the bag, we opened and closed the mouth of the puppet. Then Grandpa showed pictures of healthy and unhealthy things people put in their mouths and our class members opened their puppet mouths when it was something good for them and closed their puppet mouths when it was harmful. You can find some of the pictures we used at "www.sugardoodle.net/joomla/index.php?option=com_content&view=article&id=7542"
Some of our class members didn't know what to do when he showed pictures of cake and cookies. We decided that these sweets are not bad for us as long as we don't eat too many of them. Then we put some badges ("http://emmasplacetobe.blogspot.com/2009/03/word-of-wisdom.html") on their paper bags.
We had fun singing in rounds:
For health and strength
and daily food
we praise thy name,
O Lord.
To finish our lesson, everyone ate some wheat rolls that I made that morning. They all agreed that eating healthy food made them very very happy. :) Come visit me and I will make some fresh rolls for you.
I hope each of you will promise yourself that you will NEVER disobey the Word of Wisdom. I promise you that if you keep that promise you will be blessed with "knowledge and skill in all learning and wisdom: and... understanding in.. visions and dreams" like Daniel and his friends.
I love YOU!