I put together 6 different bags. Each bag had a 'theme' and it had items inside based on the theme. I had a printable stapled to the front of the bag that had an area for me to write the main idea and 3 details (one for each item).
To teach main idea and detail. "I read the book, A Tree Named Steve. The students had to write the main idea, 2 supporting details, and adjectives to describe Steve. This really helped teach that the details help to support the main idea!