Middle name for Finneas?

We are thinking of using the name Finneas if we have a boy. Weve loved the name Finn for a long time but I've always felt it's more of a nickname so this way we get to use two names we like in a way. My only problem is it's so hard to find a middle name for!

I usually go for names a bit boho/hippy/ nature inspired e.g a couple on my list Forrest, arrow, fox, Jasper.

I've thought about Finneas Sebastian but I would really like a middle name closer to my style.. any help would be much appreciated as I'm stuck! Thank you