As a Canadian, while I see your thought is well intentioned, per poppy protocol, is worn on the left lapel close to the heart.
Wearing it on a headband or a hat outside the Remembrance period is disrespectful and as someone else stated, would be more like an accessory or decoration.
Given the poppy is plastic and felt, I don't think it would hold up in a sewn fashion anyway and taking it apart would be considered defacing it (see below). The poppy is to commemorate a very important part of our history, and as such, wearing all year takes away from and minimizes the purpose of Remembrance Day. I can't say I have ever seen anyone wear a poppy after Nov. 11.
Jimithing - Remembrance Day in Canada is to remember Canadian War Dead, like Memorial Day in the US. It is not like Veteran's Day. Departing from the traditional Poppy placement would be seen as extremely disrespectful, especially wearing it as an accessory.
Here is Poppy Protocol per the Canadian Legion:
There are few things the Legion wants Canadians to keep in mind:
* The poppy should be worn as close to the heart as possible or on the left lapel of the outermost garment.
* The poppy should only be worn during the Remembrance period, starting the on last Friday of October and ending at midnight on Nov. 11, or at other veteran-related special events.
* The poppy should never be defaced in any way including replacing its pin.
* An old poppy should never be reused. Appropriate disposal of the poppy is left to the discretion of each individual.
* Any poppies found lying on the ground would be best placed lying at the foot of a war monument or in a local cemetery.
Little known facts:
* Until 1996, poppies were handmade by veterans in Vetcraft workshops in Montreal and Toronto. The work provided a small source of income for disabled ex-service persons.
* While the traditional lapel poppy is the most popular, car models, large table varieties and metal pins are also available at most Legion branches.
* The centre of the poppy was originally black but was changed to green more than twenty years ago to represent the green fields of France. In 2002, it was changed back to black to reflect the actual colours of the poppies that grew in Flanders, Belgium.
* The poppy is an international "symbol of collective reminiscence."
* Poppies have been associated with those killed in combat since the Napoleonic Wars of the 19th century, more than 110 years before being adopted in Canada.
* Prior to the First World War, few poppies grew in Flanders. Trench warfare enriched the soil with lime from rubble, allowing "popaver rhoes" to thrive. When the war ended, the lime was quickly absorbed and poppies began to disappear again.
* In 1915, Guelph, Ont. native John McCrae, a doctor serving with the Canadian Forces Artillery, wrote about the poppy explosion in his famous poem In Flanders Fields.
* An American woman inspired by McCrae's poem wore the flower year round and exported the idea to Madame Gu�rin of France who sold the handmade poppies to raise money for poor children. Gu�rin later convinced friends in Canada to adopt the symbol as well.
