I did use bias for bibs, back when my kids were babies, and all my friends were having babies (bibs were a great gift).
I used bias last by making my own, encasing it around some polar fleece for home made cording.
BTW if you are ever interested, cut polar fleece in strips, pull and it rolls up all nice and fat like the finest filler cord. And UNLIKE the filler cord, polar fleece wont shrink.
I haven't used stretch lace for hems since about 1972. I have used a bit of good stretch lace for waistbands of panties, but that was a few years back and it was a better quality than the stuff they used for hems.
If I remember correctly the stretch lace, you sort of used it to ease the hemline back in, because if a hem is on a skirt that flares out,
the bits under the hem have to "come in" in order to fit up under the hem neatly and stretch lace was a tidy way to hem.