Algodoo

Have you ever heard the story of Sisyphus? - Punished by the gods by pushing a boulder up a mountain until the end of time, but the boulder always rolls off before reaching the top.

A futile, difficult and meaningless task. This is where the word 'Sisyphean' comes from.
And to say that this little thing isn't experiencing the exact same is simply wrong.

Feel free to redesign it, since that is exactly what i did with this thing. Upon seeing Ravenplucker's older design of a similar machine, I felt like it would have been fun to make. Link to the original in the comments.

Have a nice rest of your day, and enjoy.