Just watch these creations which could be made by pouring concrete into Lego.
the basic material along with the necessary tools.
Step one involves designing the layout.
Step two includes the process of gluing down the Lego bricks.
Step three includes making a structure building of the mold, mixing and pouring the concrete in right quantities.
Step four includes removing the mold.
Step five includes the addition of a drawer along with the legs and cleaning up the lego bricks.
A clear guidance and step by step instructions are included here.

The instructions will guide you one step after another.
Similarly a Lego Skull Planter could be made.
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