At the end of the school year send a few post cards with stamps home with each student and ask them to mail them to you when they have finished a book. Students could also send postcards to students in the same grade but at a different school and tell them about a book they finished,
This is an outline of a postcard to use with your students. Students can design their own front & stamp as well as practice their writing skills! My kiddos love being able to "send" letters to one another & to their family members using these.