Bi here! I have a small rainbow eevee pin on my backpack for fun (plus, it's a cute pin).

As for culture, there are some memes, but really IRL, I haven't seen much, as everyone kinda just goes with the flow. And honestly, I'm okay with that. Most of my friends are bi+ or sone form of queer. There's not really a prevailing culture at gay bars here either, which is kinda nice. Everyone just comes as they are, whether they are old or young, and you would be hard pressed to label them because they don't look "gay/bi".

I think to some extent, it's good when we get integrated into society and become a part of it. We used to exclude German Americans, but now they are impossible to distinguish from the rest of society, as they became normalized. Same with LGBT, to some extent, even if there's occasional retrograde motion here or there. If you want a good book to read, check out "The Lavender Scare: the cold War persecution of gays and lesbians within the federal goverment" by David K Johnson.

https://www.amazon.com/Lavender-Scare-Persecution-Lesbians-Government/dp/0226401901

It allows you to see how recursive history is, particularly on gender rights, but also just how far we've come within people's lifetimes :)