There's nothing more self-referential than knitting a sweater with sweater stitch markers!
This is a set of eight numbered markers, each shaped like a pullover with a yoke style. They are 3D printed in lightweight plastic and will not weigh your knitting down. Also, they should be snag-free since they are each printed as one piece.
The markers come with a holder which is decorative and not intended to hold the markers securely together.
They are also shipped with all markers connected by a thin loop of plastic. You will need to cut this loop to release the markers.