You can leave with just knowledge... You just can't. Your assignment is to try one of the following tasks:
1) Create your own blog for consumption by students, parents, or your coworkers. Newbies can follow the directions at Almost Everything You Can Do With Blogger*
2) Post to your blog a reflection of what you learned here and what you'll try when you get back to school.
3) Collaborate with another teacher here to create a blogger project for your students.
Whatever you come up with post a comment below about what you created and how you are going to apply your new knowledge when you get back. Feel free to tweet it out too. We'll share our work around 2:20pm.