It is called an etui
It is called an etui
A small needle or a cosmetic case is an etui.
The decorative top of a column is called the capital.
The decorative curl on the end of a violin is called the scroll.
The decorative wood on a staircase is called "wainscot"
To use a needle and thread could be called sewing.To use a needle and thread could be called quilting. To use a needle and thread could be called embroidery. To use a needle and thread could be called suturing.
"Decorative" when describing fruit trees, means no fruit. It is called a decorative Red Plum tree.
A decorative garland of flowers is a lei.
The clear plastic section of the needle is called the needle hub. It is the part of the needle that attaches to the syringe and holds the needle in place.
....you answered your own question - it's called "threading a needle".
etui
The hole in a needle is called an eye. The eye of the needle is where you pull the thread through.a hole