Some do some don't. Normally it's paper currency but as Krispy posted they offered coins for an anniversary some months ago. I didn't bother picking a coin up for the same reason I don't keep their paper currency..... butt ugly , but that's my personal opinion. I use them on gas that's about it if you want and example of a circulated 5 cent and 10 cent bill I would be more then happy to send that over for you just send me a PM with your address.
I collect them and it's very interesting to see all the errors that they seem to have. Years ago a friend found an ad for forming the club and gave it to me now i'm charter member #153 Its just a spin off of my regular paper money collecting. Dean
I have a few that I hang on to. Most are the lower denominations but I have one that is from their 75th Anniversary. A link with a history of the notes: http://corp.canadiantire.ca/EN/AboutUs/Pages/CanTireMoney.aspx