Award these certificates to your students for their progress in home reading.
There are certificates for 'super reading' and 'out of this world reading'. There are also certificates that can be awarded based on the number of home reading books read (25, 50, 75, 100, 125, 150, 200, 250, 300, 350, 400).
They print 4 to a page, size to suit your needs (and printing budget!).