Look, this is the flag me and my girlfriend made. We are both poly and just are not fond of the flag. I know that many other people have been doing this and some of them are nice but...
The older flag with the pi symbol honestly feels like mockery!
The one that is similar to the last one but with a black triangle looks like a a countries flag. I like it otherwise!

The blue pink and black ones are both very nice too but it is a little stereotypically feminine in our opinions.
The greens and blues one looks too similar to the gay men's flag.
So we made this. It has the symbol of dionysus on it. I know that dionysus is the God of wine and sex but he* was also openly polyamorous and someone I would be honored to symbolise polyamory. You can obviously use whatever flag you choose. I just wanted to share my creation (I don't have any social media)
Share anywhere else if you like it and if you don't that's OK too!
Stay safe guys gals and non-binary pals!