Hi, Kevin! In my collection, I have some Canadian coins, too. It seems that every so often I will get some in my change and I will always keep what I find. When I was in high school, I dated a guy in the Navy who knew I collected coins so he brought some from wherever he landed. I've got a weird collection (although small) of foreign coins. The wheat pennies seem to be the easiest "old" coins to still find regularly.
I hope that you find some cool coins when you check yours out!