We did this one year during our annual retreat. We prep the room to make it darker to create a worshipful environment. I first suggested that worship to God is like writing a love letter to God and led them into a few worship songs. After that, while music still playing on the background, I pull out a plain transparency on the overhead projector. I submitted to them that we want to write God a love letter publicly together as a corporate worship to Him. I invited them to come up one by one to write something on the transparency in the form of “I thank You because…” At first it took awhile for the first person to come up. But after awhile, students (and adult helpers) keep coming up to write on the transparency – make sure you prepare more transparencies in case they get filled up. It was a great experience as the whole group watches each other give thanks to God, hence, a corporate worship. At the end, we close with a prayer. It was a very touching experience for our students.