Use this idea for a silent read countdown. Turn all lights on. Every 5 minutes turn one off so the students have a visual cue of how much time they have left to read silently. Also a good idea for a visual timer in general.
DIY Preschool sunbleach puzzle: Leave magnet letters on black paper in the sun. The sun bleaches the paper and you have an instant letter matching center. Great way to practice letter sounds, spelling, numbers.so many possibilities.
Reading chains: Every time a student finishes a book, they can write their name, title and author of the book on a strip and attach it to their class chain. Perhaps the class with the longest chain at the end of the year could get some type of reward.