Going to start a new spelljammer game, and I have ideas for two possible story starts, and can't choose which to go with.
>The party all get black-holed by two bags of holding being put together and start the game floating in the Astral Sea, in an area filled with other creatures and things dumped into the realm this way, and will have to navigate their way back to the edge of wildspace using whatever debris and other things are available, eventually finding their way to a settlement which is essentially a plastic beach. A Hill Giant will float into the settlement soon after and having just left the Astral Realm, will suddenly be starving again and start tearing the place apart looking for food.
Or
>the party begins captive in a Nautiloid as a Gnome Ceremorph runs experiments on them using a type of psionic fungus that pulls away fear/anger/etc in an attempt to find an ethical alternative to eating brains. Right as the discovery is made, a large scale stipple battle breaks out between some Giff and Githyanki, and the nautiloid is caught in the middle, destroying the gnome's research. Players will have to convince one of the sides to help then or otherwise find a way to survive the battle, and choose whether or not to try to convince peoe that mind flayers might not have to eat brains.

Which should I go with for the opening? The other will probably be incorporated in as a later quest.