Could you explain why you're making a Canadian connection here? Is it because we're a Commonwealth country?
The heraldic device I have is because designing, registering, and displaying them is an integral part of the Society for Creative Anachronism (SCA). It's one of the first things new people are encouraged to do, next to deciding what their persona's name will be, assembling a costume to wear, and gathering a basic nef kit (feast gear - dishes, tablecloth, and candles).
I attended an Ithra course on basic heraldry (Ithra is an SCA "university" in which people can take courses on many aspects of SCA and historical medieval life; heraldry is one of the basics that everyone is encouraged to take). We were taught the rules of SCA and historical heraldry, and also which things are forbidden. For instance, there are dozens of different types of heraldic crosses, and centuries ago the one we now know as the swastika was perfectly legal and okay. But due to the events of the mid-20th century, of course the swastika is forbidden. There are others that are also forbidden, for a variety of reasons.
To get a heraldic device approved in the SCA, it has to be unique, or at least not too similar to something already registered, either within the SCA or in real history. That makes it a challenge to figure out something unique that doesn't step on someone else's design. In my case, there was a bit of concern about stars, because lots of people have stars on their devices. But on the flip side, not that many people have panpipes. I chose stars and panpipes as a nod to my primary interests of science and music. If I'd been as involved in writing back then as I am now, I'd probably have tried to shoehorn a quill in there somewhere as well. I can think of how it could be done, and the only barrier would be if someone else thought of it first and got it registered.
Anyway, here's my device:
Per saltire Or and sable, in pale two mullets sable and in fess two clarions Or.
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