I would also like to see more interactions between stuff, like what happens if you could pick up the Cocktail & feed that to the "biological entity"? (read my previus comment). What if you feed coal to the fire instead of water?
What if you mixed coal & water to make ??? (wet coal?) and feed that to the furnace?
What if you could throw coal at the blue area?
What if you could pick up cogs & do something with them?
...& more.