A few other things that represent Canada: The maple leaf (on our penny), the Beaver (on our nickel), the Bluenose Schooner (a tall ship on our dime), the moose (on our quarter), the loon (on our $1 coin we call the loonie), and the polar bear (on our $2 coin we call the toonie). Maybe you could print out something from our Royal Canadian Mint at w3.mint.ca to have something to represent Canada.
In addition to butter tarts and nanaimo bars, maple syrup and maple sugar candies are other yummy Canadian treats.
At Christmas, my family eats pork pie. Tourtiere is a pork pie that is a French Canadian tradition. Since my husband's family came from England a few generations ago, we make it slightly differently and have a spin on this. Traditionally tourtiere is eaten Christmas Eve, but we eat it for breakfast Christmas Day. (took me a while to get used to it!) We also must have shortbread cookies that I make with my grandmothers recipe from England (not for breakfast though! lol). Other than that, much of my Christmas is similar to yours (my Christmas dinner would be like that of a typical American Thanksgiving dinner - turkey, potatoes, pumpkin pie etc etc). As others have said, in Canada we celebrate many cultures and the traditions and foods of our friends become part of ours.
If you are stuck for ideas of what to bring in, peamail me and I can send you a flag pin and maple leaf pin.
Annette