Z= Zipper (One of Canada's 50 Greatest Inventions - dating back to 1913, who cares if it rusted after being washed and had to come with directions!!). Here's the inventor:
Straddling the Alberta-Saskatchewan boundary, the Cypress Hills rise to the highest elevation in Saskatchewan (1,392 m); and in Alberta it reaches 1,466 m, the highest point in Canada from the Rocky Mountains to Labrador and the Appalachians.