I am looking for a non-toxic material for a wire/rod that allows room temperature deformations without work hardening.
Example uses are semi-rigid cables that one can bend and that hold their shape afterwards or snake-like cellphone holders like the one in the image below.
I looked at a very old one I had lying around and found it was simply a lead rod. (Or at least is looked and felt like a lead rod.) To me using lead did make sense since its recristallisation temperature is lower than room temperature - hence no/very little work hardening.
Are there any alternatives that are at the very least non-toxic or even better bio-compatible? I looked at electronics solder since their melting point is fairly low but found they do exhibit work hardening at room temperature and break after multiple deformations.