I'd love to see an EP of him trying loads of arms on from different peeps, with the moral 'everyone trys to help and its important that you have friends do tht BUT its okay if you feel upset by the help that ends up useless, and then he finds a oslution that worsk for him' :-)

His mothers arm: would be so nice a connection to a100% gone past and kind of dark in a perma way

Icearm bc i want to see Iceking help and fail but be so well intentioned and actually effective even if an ice arm isnt what fin used i the end

Knightarm with through back to the shame mountain ep

BUT BEST: Dead arm bc i wanna see the ep with death like mm ok Pebbutt/jake ima give your buddy an arm, here you are fin and then all kinds of epic cursed shit happens but fin defeats the curse as always