I had the swap planned so that different grade levels came on different days. This allowed me to put out appropriate level books for each grade.
There were mostly and picture books and chapter books that were swapped, but...
...there were also a few nonfiction books as well.
My first "customers"
All of the students I asked said they enjoyed the swap and would do it again. I think we're going to try doing another one towards the end of the school year. It really was an easy activity, will minimal set up and organization involved.
If you missed the first post about the swap, you can find it here along with a link to free files to hold your own swap. I'd love to hear about your swap if you decide to do one.