Making a Snowman

Start with the base.

Change the BoxMesh to a SphereMesh

Rename the MeshInstance3D to Base

Duplicate and Scale the Mesh Instance

Press CTRL+D to duplicate the node and use the move tool to move it up. 

Use the scale tool to make it smaller than the sphere below it.

Rename the Node to Body.

Repeat the process for the Head.

Create a BoxMesh for the arms.

Rename the parent node: Snowman.

Now we can create multiple instances of snowmen.