@interneteh Ok, might have a few ideas, but first have you considered checking out the old Gamma World books? They were fairly light hearted takes on the post-apocolypse, so good for kids. Sentient bears and things.
@interneteh PNW animals that would be cool:
-Intelligent spirit bear colony on one of the islands
-Blackberries with mutations to make picking them REALLY suck.
Sunbeam City is a Libertarian Socialist solarpunk instance. It is ran democratically by a cooperative of like-minded individuals.