Haha my girlfriend and I still sing the Sampo song. That movie is so disjointed that I didn’t even recognize this was that.
And I still don’t know what the Sampo is!
And I still don’t know what the Sampo is!
No one does. Sampo is basically just a magical MacGuffin that brings wealth to whoever has it. In Kalevala it is usually understood as a mill that creates infinite grain, salt and money, but different folk stories have different interpretations.
You are not alone! Scholars are still debating it. It is some kind of magical device which create wealth, but there is a number of very different theories raging from a magical mill to the "pillar of the world".