There's honestly not a lot to save up for in this game. It used to be that you could dump your currants into XP via donations or ice, but now that those have been nerfed you just sort of derp around with your currants and let them sit there.
larky lion managed to earn enough currants for an Alakol house through one day of playing. That's supposed to be the amazing showoff house. If you can reach that in one day of playing, what are we supposed to do after 30 days of currant gaining?
Even FarmVille had the villa, which took weeks to get in spite of it being such a low-commitment game. Glitch has... cubimals? For now, that's about it.