As kids in kindergarten, we would place our chairs upside down on our desks at the end of the day. To make it easier for the cleaning staff to sweep the mess we’d made all day. Now, while most children don’t go beyond three and a half to four feet, stacking chairs sounds like a good practice to get kids to understand how stack-ability works. The stackstool is a colourful, child-friendly stool that stacks easily.