So @RJd125 made a post asking about people's headcannons for the Strawhats, and this is my expansion on my personal headcannons for not just the Strawhats, but others too! The first 7 can be found as a comment on the original post, but there's more here! Also, feel free to comment your own headcannons!
PS comments fuel me to keep doing crap like this, and i'll happily take constructive criticism! But no straight up criticism. Thats not okay 😎🙃
Now, onto the headcannons! (if you want elaboration on any, like the Ussop Comics one, just ask!)
Brook, Franky and Jinbe have a little band (name suggestions, anybody?) and perform for the crew sometimes. Brook on vocals/piano, Franky on acoustic guitar, and Jinbe on bongos/drums (he just gives that vibe, ya know?)
I am a HEAVY LuNa and Frobin shipper, so those exist
Ussop draws and writes comics for the crew to read. His most popular are Sogeking: Warrior's Adventure and That One Time a Rubber Boy Existed (this is a series of short, unconnected comic strips about a 'cartoonised' version of the Strawhats). His comics are also popular among the Strawhat's allies and even their enemies - this includes (but is not limited to) Law and his crew, Bartolemeo and his crew, most of Paradise and the East Blue, Kid and his crew, Garp, Sengoku, Aokiji/Kuzan, Koby, the Cross Guild (Mihawk actually laughs at some), and many more. Also, do not ask me how the comics are distributed throughout the world; idfk they just are
(this might as well be actual cannon) Jinbe is constantly diving off the ship to save Luffy, courtesy of his dumbassery
Franky is currently working on a Luffy-proof lock for the fridge. He is on Version 3,427
Jinbe sometimes sleeps in the aquarium
Sometimes, when the Strawhats dock at an island, Ussop will don the Sogeking mask (he still has it, FIGHT ME) and fuck with the newspapers (eg: SIGHTING! SOGEKING APPEARS AGAIN! and so on)
The Straw Hat Grand Fleet have a bi-monthly meetup/call to fanboy/fangirl over the Straw Hats and their recent activity (Bartolemeo is the organiser)
Zoro 'secretly' (everyone knows) wears pyjamas with a cute animal print on them
Whenever tea is on offer, posh/Bri'ish Franky shows up (Franky is slightly addicted to the hot leaf water, BUT COLA REIGNS SUPREME)
To compliment Ussop's comics, Franky makes merch (again, idk how it's distributed, it just is)
The comics and merch, much to Nami's disappointment (the rest of the crew had to literally fight her for this) are free
There is a war for the Luffy merch between Bartolemeo and the Kung Fu Dugongs
That's all i got for now, hope you liked it!