Classroom Boggle-with letters! for kids who finish early! First off, I LOVE boggle! Secondly, this is an awesome way to keep kids busy if they finish early and it would be easy to change some letters at the end of each day or the next morning!
I used to use a whisper phone! DIY Whisper Phones~ Children use these to hear themselves as they quietly read aloud. This post has great directions and with pictures that explain how to make them with inexpensive materials.