In the folder below are a handful of mini-lessons following the "Connect, Teach, Active Engagement, Link" (Teachers College) framework. Many of the lessons are drafts, scripts of demonstration lessons that I've taught. Please know that they are far from perfect, but they are, indeed, drafts.
Two Writing Teachers on Mini-lessons
Out of District 75 in New York comes this guide for launching the workshop. Even though it's a ten year old guide, the suggestions for mini-lessons early in the year are still on target.