Economic Weirdtopia: Market is so efficient that nobody has to work, and everybody's basic needs can be sustained by just asking any charity. This prosperity hyperactivates everybody's social status chasing instincts, so people work harder and longer than ever, feeling inadequate if they don't earn more than their peers, and spending most of what they earn on making their 3d virtual avatars look better than other people's 3d virtual avatars.
Sexual Weirdtopia: Reproduction is completely separated from sex, children are taken care of by free market and government services with just token parental involvement, and all STDs all eliminated. This first leads to everybody having sex with everybody else, but people got bored with vanilla sex soon and many sexual identification based on shared sexual fetishes emerge. They replace religions, languages, citizenships and ethnicities as leading in/out-group indicators, and somehow Middle East is still in endemic state of war, now between guro and furry.
Governmental Weirdtopia: Government knows everything about everybody, but doesn't abuse it because everybody knows about everything it does. Universal transparency makes corruption impossible, so people are no longer interested in governing or lobbying and governments atrophy with time.
Cognitive Weirdtopia: Combination of efficient search and prediction markets made all knowledge easily available, so all schools shut down. People don't even learn basic mathematics any more, as easily available mathematical coprocessors for brains do that more efficiently and without prevalent human biases. People find themselves a niche hobby that wasn't explored yet and learn everything about that yet. If they're lucky it might get popular later and they'll make decent money in prediction market out of it.
Utopia and Dystopia have something in common: they both confirm the moral sensibilities you started with. Whether the world is a libertarian utopia of the non-initiation of violence and everyone free to start their own business, or a hellish dystopia of government regulation and intrusion—you might like to find yourself in the first, and hate to find yourself in the second; but either way you nod and say, "Guess I was right all along."
So as an exercise in creativity, try writing them down side by side: Utopia, Dystopia, and Weirdtopia. The zig, the zag and the zog.
I'll start off with a worked example for public understanding of science:
Disclaimer 1: Not every sensibility we have is necessarily wrong. Originality is a goal of literature, not science; sometimes it's better to be right than to be new. But there are also such things as cached thoughts. At least in my own case, it turned out that trying to invent a world that went outside my pre-existing sensibilities, did me a world of good.
Disclaimer 2: This method is not universal: Not all interesting ideas fit this mold, and not all ideas that fit this mold are good ones. Still, it seems like an interesting technique.
If you're trying to write science fiction (where originality is a legitimate goal), then you can write down anything nonobvious for Weirdtopia, and you're done.
If you're trying to do Fun Theory, you have to come up with a Weirdtopia that's at least arguably-better than Utopia. This is harder but also directs you to more interesting regions of the answer space.
If you can make all your answers coherent with each other, you'll have quite a story setting on your hands. (Hope you know how to handle characterization, dialogue, description, conflict, and all that other stuff.)
Here's some partially completed challenges, where I wrote down a Utopia and a Dystopia (according to the moral sensibilities I started with before I did this exercise), but inventing a (better) Weirdtopia is left to the reader.
Economic...
Sexual...
Governmental...
Technological...
Cognitive...