Anybody Know Of Any Foss AI Logo Generators?

I think you can just ask most general purpose models to make a logo. I literally just asked Google Gemini “Create a logo for my starfinder company” and it created some reasonably good logos

Dawg just draw one

Have some logos. We can say they are CC-BY licensed if you want to use one.

Your own Stable Diffusion?

In the professional graphic design world, a logo isn't just an "icon".

Any graphic designer worth his/her salt first asks some questions, gets to know the type of business, what the owner wants to convey, etc... and then creates something that reflects that. It's why illustrator software will usually have a sort of "scratch board" functionality, where you can quickly develop various iterations until you get to the one that says what you want it to say.

Generating a shitty AI logo not only denigrates actual iconography, but cheapens the professionals who struggle in that field every day as their own work get's less and less appreciated.

Rant over...

(I know you said FOSS, but) I'd try Bing Image Creator for such a small job first. It's free, and you can just tell it to generate a logo with the style you're looking for.

If that doesn't suit your needs, you can always fall down the rabbithole of selfhosting Stable Diffusion, but it's probably more effort than it's worth.

I can draw you one for free if you want?

https://perchance.org/ai-character-generator

It says character generator, but you can totally use it for other stuff. It's just stablediffusion. I've used it to generate illustrations of locations to show to my Pathfinder players.

Self-Hosting your own model?

That really depends on the purpose. If you let us know what or why, we all would be happy to help!