I created a series of very thin cubes and created a card deck. I built 2 houses of cards, each is 4 layers high, and then balanced a beam across the tips of the card houses and put a barrel on top of that. In the video I show that various tests and stages to demonstrate the balancing act.

To create a tower of balancing amazement, I built 2 x 4 layer house of cards, then put a plank on top of the 2 houses to balance on the point, and then a barrel on that. Video shows various stages.