So teething necklaces are a THING these days. A very useful thing, if you ask me, as my littlest little liked to yank the shit out of my everyday necklace (silver chain with the biggest little's thumbprint on it, made by Camille Cesari, who I cannot recommend highly enough for parent/grandparent gifts!).
They're essentially necklaces for grownups--not for kids--that are made from silicone beads, strung on satin cord with a breakaway clasp (pull hard on the clasp and it'll break apart so no one strangles on it). Really, they should be knotted necklaces, with knots between each bead to keep it from being a choking hazard, but some of the cheaper ones out there are not handknotted--a bad idea for anything designed for kids.
The silicone beads are firm, but slightly squishy and have a great tactile matte rubbery feeling. As you wear them they warm up and soften slightly. And as someone who really likes tactlie things, it's really really hard to keep myself from gnawing on them. So I squish them instead.
They're pretty cute, very "statement necklace"-y. And the folks who make them charge a lot for them (rightfully--time + materials + profit = $) .
But I like making shit. And I like choosing my own color and bead combos. And not paying $60 for something I can make myself.
So, I hit etsy for some silicone beads, and got a couple of different colors and bead shapes, as well as the breakaway clasps. I had the satin cord already. An hour on the couch in front of the teevee, and bam, several new colorful necklaces that I can fiddle when bored or let my kid chomp on while I'm holding him!