What would this little 'tool' be ?

[fernando]

Not the right configuration. Both head and hole should not be wider than the shaft. Neither the material; mending needles have a harder steel finish, not soft enough to have decorations. A worse situation if it were for leather penetration; edges and point sharpness having to be more acute.
Still so far the brick laying level tool is the winner.
...Further opinions to be considered, though.

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