Book Rings!

There's one teaching item I don't think I could live without...book rings! I don't just use them because it's fun to quickly flip the cards as my students master skills... I DEPEND on them for organization! Every flashcard, word sort, game cards, etc. get a hole-punch and a book ring. Even my "I Have, Who Has" game cards are hole-punched and stored on a ring. I simply remove the ring to play & put the cards back on when we're done. I believe this all comes from traveling between classrooms and always needing to perform quick informal assessments. I've even created customized book rings for students' with skills based on their IEP goals (such as sight word identification, counting, etc.). I use these rings for gathering data for quarterly progress reports (as well as using collected info throughout the quarter!). It works great for a "quick check" for understanding, too. And for some reason, my students LOVE them & always want to "play" with them (play = practice the skill!). This certainly works for me! And thank goodness the school I work at has an electric hole-puncher! Does this sound odd or do other teachers/interventionists do this too?

What teaching and/or organizational item can you not live without?