That sticker on the boarding pass is a nice way of handling it in the airport, the airport is really a stressful place, especially the security lines.My home airport also has a sunflower sticker that one can have put on their boarding pass for those who wish to be more discrete.
At airports, I've seen others wear a sunflower lanyard several times in Canada, but only once in the U.S.
Outside of airports, the UK is the only place I've seen people wear a sunflower lanyard, and in the cases I've seen, it was worn in lieu of a work or school lanyard.
The UK is the only place I've worn one outside of an airport.
I'm not seeing many here that are wearing the lanyard, but I have seen others wear it both in the streets and in the supermarkets. Last time I went to the hypermarket, they had a basket at the information desk with a sign that you could take one if you needed it, so they are trying to push the awareness if it.
The door to our local Ikea has a sunflower, and states that they support it - In the summer there are some of our biggest music festivals that openly supports it, not the one I go to unfortunately, I have written them and asked if it was something they would consider thou