I mostly use size 11 sharps that I buy in bulk. I change to a new needle with every embroidery project so I put the used size 11 needles in a little bottle to use in the sewing machines since they are still sharp enough for sewing. I can hear it(pucka-pucka-pucka) when a needle needs changed in the sewing machines, then it goes to a sharps container.
Since I only use other sizes/types for specific projects, I remove the needle after the project is finished and put an 11 back in.
Cari