To make a wobbly neck with fibreboard discs, you'll need a pair of cotter pins, 2 discs and a pair of long nose pliers (or cotter pin turner tool).
Start by inserting one of the legs of one the cotter pins through the eye of the other cotter pin
Place a disc on one of the cotter pins
With the help of the long nose pliers, grab one of the cotter pin's leg and turn it tight over the disc
Repeat for the other leg of the same cotter pin
Run a gathering stitch around the bear's head neck
Place the set of cotter pins and disc inside the neck, making sure the straight pin is protruding out of the neck
Pull thread and close neck opening securely with a couple of knots.
Insert straight cotter pin through the opening at the top of the body
Start by inserting one of the legs of one the cotter pins through the eye of the other cotter pin
Place a disc on one of the cotter pins
With the help of the long nose pliers, grab one of the cotter pin's leg and turn it tight over the disc
Repeat for the other leg of the same cotter pin
Run a gathering stitch around the bear's head neck
Place the set of cotter pins and disc inside the neck, making sure the straight pin is protruding out of the neck
Pull thread and close neck opening securely with a couple of knots.
Insert straight cotter pin through the opening at the top of the body