Okay, I'll admit it: I started playing Christmas music yesterday.
So I obsessed over it for 48 hours, and made my own. I drew a simple cartoon history of the Old Testament. It doesn't include every prophet and king and favorite story (because otherwise it would be 10' long!), but it provides a big picture, so when you're reading your favorite story you can point and say, "this happened here." I'm hoping it will help my kids develop a sense of the continuity of the story.
I drew the timeline over 5 sheets of paper, but through the magic of Adobe, I've squished it onto a single printable page. Yes, ONE page. The pictures are tiny, but they are simple and readable, so I think it works.
And its for you, too! Wishing you a good Advent and blessed Nativity! Grab the printable PDF here - it includes a black and white page, and one with a little color.
Update: The zazzle version is still available, and you can get the image printed on a variety of products there. But I'm now recommending this pretty 17 x 24" poster printed by Fine Art America.