American collectors can collect professional cards of their local university team/alma mater. Not so much so in Canada, as there are precious few cards of their sports alumni. Maybe in CFL sets but you don't have very many options. But, if you have a local team in the O/W/QMJHL, there's an opportunity for a mini-collection there. And at the Expo, a dime box helped me expand my Kitchener Rangers collection.
And there you have it!