More things to get rid of:
Marking pencils that are impossible to sharpen. I swear the "lead" breaks every 1/4 inch. Why do I even try after the fifth break?
Dried up glue and/or glue sticks. I don't think I can rejuvenate them by spritzing them with water - can I?
Pens that are almost out of ink and barely write.
Scissors that have been dropped and the points are knocked off or the blades are gouged.