They gathered.

They assembled materials.

They made things — the beads, the ornaments, the carved birds — or retrieved things they had already made.

They dressed him in decorated clothing.

They placed the diadem on his head.

They arranged the other grave goods around him.

And then someone went and found a flat stone, heavy enough and wide enough to cover the burial.

And they carried it to the gravesite and placed it over the child.