To will a thimble

It was her last wish
in a velvet box, with silver clip
magic was its dimpled thrust
to bend the thread of life as such
bring love or wealth, embroidered stitched
a silver dimpled one time wish
but as the lawyer read the will
there was just one codicil
each relative gave up a gasp
requisites, that were her last
the digit must be a perfect fit
that points the way to such a gift