the calculator

(a)  

the notebook

(a)  

the desk

(a)  

the pencil

(a)  

the map

(a)  

the backpack

(a)  

the paper

(a)  

the board

(a)  

the pen

(a)  

the door

(a)  

the clock/watch

(a)  

the chair

(a)  

the chalk

(a)  

the window

(a)