shabbat 146

making a hole & turning an object into a vessel.

like a spear puncturing a barrel. the snake pierced Eve, and contaminated her children, humanity as vessels of lust.

until they stood at Sinai.

(this page discusses if one is permitted to make a hole in a container to get access to the contents. but the page begins with R. Yohanan saying that when the snake pierced Eve, it contaminated humanity with lust, which was only removed for Israel when they stood at Sinai. for english translation of this Talmud page, see here)

shabbat 125

and the discussion of 'what is an object' continues
so
what is not a vessel?

if it is made from raw materials, too small to be useful, or attached to the ground.

but if the broken part of a vessel can be used in same way...
...then it is the same type of vessel.

just smaller

(for english translation of this talmud page, see here)