Technology

I think people would find new ways to struggle that they actually enjoy and would likely end up contributing. Imagine a couple of thousand people with their new modest but stress free budgets decide to join a yearly potato cannon contest, Sure its not going to invent anything new directly but you now have a bunch of people learning about ballistics and stoichiometry and high pressure engineering all egging eachother on to shoot that potato further. The competition gets more and more fierce and with the much lower stakes people start trying some more out there ideas, before you know it you have a modest but highly effective solution to reliably obtaining the correct gas mixture for something like a combined light gas gun.

And that's a deliberately silly example, you'd get a ton more art, people deciding to be athletes, coders, all sorts of hobies that can encourage healthy competition and often benefit society in surprising ways.