I am continually amazed at how well the above items do in teaching the Bible to our children. Our two youngest children use these three items every night as they fall asleep. And they have come to know the stories of the Bible very well, even at a young age.
The first item is a DVD filled with 450 dramatized stories of the Bible. Each story is about 6-9 minutes long. All in, there are more than 56 hours of Bible stories. The cost is $49 delivered to your home. You can purchase it here.
The second item is a Sansa Clip mp3 player. We have placed all of the Bible stories on the mp3 DVD onto the Sansa Clip. Each night, we begin playing one of the stories and put this on sleep mode, so it turns off in 30 minutes. The mp3 player that we like costs about $40. You can purchase it here.
The third item is a pair of speakers. This allows the mp3 player to be heard in their bedrooms without ear buds. I remember picking up some at Walmart for less than $10. If you want to purchase it online, you can here. Or, you could use some old computer speakers that you have.
So, for less than $100, you can give your children a robust knowledge of the Bible. Be warned, they may soon become more familiar with the stories of the Bible than you are. If your children are older (or you have no children at home), you can always use these yourselves to learn the Bible.