Start with tubes of fabric about 18 inches long. You can make them longer and cut them later because the knots use more fabric than I expected. I used knit and woven fabrics.
Put buttons, rubber balls, beads, etc. or whatever you have in your house. I used those glass rocks that go in fish tanks. Put one in, tie a knot, put another one in, tie a knot until you have the length you want.
For the back piece I used knit so it would be stretchy and wouldn't cut into my neck as much. Sew it into a tube and turn right side out. Fold edge over and sew. I didn't finish the edge because it's a knit.
To finish the edge of the color edge, I folded the fabric inside the tube and topstitched. I wasn't trying to make this really nice because it's going to be chewed on and pulled on by a baby.
Sew some buttons onto the edges of the fronts that can be used with the back buttonholes. Now you have and interchangeable necklace.
It's pretty casual but a little funky.
Perfect for little hands to grab. It's a "toy" that's always ready, can't be thrown across the room, and is a great distraction.