Certainly, here are 10 of the most usable things in a school environment.

Pencils and Pens: 

Essential tools for writing and note-taking.

Notebooks and Paper:  

Used for recording information, taking notes, and completing assignments. 

Textbooks: 

Core resources for learning about various subjects. 

Backpack or Bag: 

A convenient way to carry books, supplies, and personal items. 

Laptop or Tablet: 

Valuable for research, creating documents, and accessing digital learning materials. 

Calculator: 

Useful for solving mathematical problems and performing calculations. 

Whiteboard and Markers: 

Facilitate interactive learning and visual explanations in the classroom. 

Folders and Binders:  

Help organize and store papers, assignments, and handouts. 

Erasers and Correction Fluid: 

Correct mistakes made while writing or drawing. 

Ruler and Geometry Set: 

Useful for drawing precise lines and measuring angles in math and technical subjects. 

These items are commonly used by students and educators in the school environment to support learning and productivity.