Living through a dystopian 21 century global plague isn't all bad, I've had the opportunity to watch 2 netflix post-apocalyptic kid shows with my youngest son.
We recently finished off the most recent season of "The Last Kids on Earth". It isn't very serious at all and is full of cartoon gadgets, monsters, and inter-dimensional magical forces and zombies. Every now and then the main characters get a tad upset about everyone being dead or possibly just gone but have plenty of time for goofy adventures to improve their community or save the world. It's not very deep or serious but it's good simple fun with giant monsters, ruin scavenging, and zombies. I may have talked about it before butt it is entertaining enough to mention again.
The show is based on a book series my son read the first of a year or two ago. It's light reading with a little bit of good cartoony art. I've always been a sucker for kids books with a bit of eye-candy.
Another netflix post-apocalyptic kid show my son and I just started watching is "Kipo and The Age of Wonderbeasts". Only a few episodes in and while the show is extremely cartoony it feels a tad deeper than The Last Kids on Earth. Kipo is a a vault dweller who is out on the surface discovering the ruined world of talking mutes (mutants) that are a host of riotously comical animal mutants. There are bad guy frogs, lumberjack cats, rocker snakes, and colossal titanic mutants (the Megabeasts) that shake up everything now and again, imagine Gamma World "wahoo" style being a "9" on a 1 to 10 scale, well crank that up to 11 and you have Kipo and The Age of Wonderbeasts. We're only 4 or so episodes in and I am looking forward to more.
These post apocalyptic kid shows make the future look a lot more fun than the apocalypse has been so far.