Hope Your Surviving this Reality, Cause Dang it, Someone keeps hitting the idiot button a wee too much.
Thinking about shards of worlds,. Take the whole habitable zones for life to survive then fill it the zone with flouting shards of a billion plants.
So from Venuses orbit all the way to Mars just filled with broken planets, most the debris, & fine dust settled.
Floating islands, with enough mass for as close to normal gravity. Islands where humans, & humanoids some how survived.
From Bunkers miles deep & long. To ancient cavens that saved primitives from too much Radiation.
Anyway hope your doing well