Q: This handy gadget is found in many homes here in Canada and around the world. It dates back to the 15th Century and remains basically unchanged in its design. It is readily available for sale in store and online. What is it?
A: A Shoe Horn
It seems to have skipped a generation in my house as I never really made use of it but my kids use it all the time.
A shoehorn or shoe horn (sometimes called a shoespooner or shoe tongue) is a tool that enables the user to insert the foot more easily into a shoe by maintaining the shoe’s counter in the upright position and by providing a smooth surface on which the foot may slide into the shoe. Source