There are those apps that really do nothing productive but just make you smile while using your computer. One I really love is BananaBin a “playful reminder that it’s time to take out the trash”. Today Simon B. Støvring released another one of this kind: Festivitas, which “brings the holiday spirit to your Mac with festive lights for the dock and menu bar 🎄”. You can’t invest your money any better I think.

Update 2024-12-07: laptopllama mentioned “Typibara (a capybara pal that types with you) and Ball (a crucial app for the times where it’s important for you to bounce a ball out of your Dock)”. I instabought Typibara and Ball is also awesome.