In my classroom I use text sets from ReadWorks.org. They have sets called "Article-A-Day" which include 6 articles following one topic. I use just 5 of the given articles so we have just one theme per week which they write on the front of their book. These booklets are perfect for giving your readers a place to show their work. My students are asked to record 2-5 things that they want to remember from each article and draw a picture that shows what they've learned.
This activity typically takes students 15-20 minutes, but can be extended or shortened depending on your students.