Product review (5 stars): Indispensable In My Kitchen
It has wheels that recede as you step on it and a rubber bumper all-around. Just kick it around to where you need it and then step up one step or two to reach the glassware on the top shelf. Rugged, safe, accessible from every side. Sit on it too to sort the laundry, wipe up a mess, or change your shoes.

This must have been invented just after fire and the wheel.