This pattern that I am working on called for some stitch markers. Usually I would just use a paperclip or another color of yarn or anything that will work. I had nothing on hand at the moment and decided that maybe it's time I had some real stitch markers. So I made some, and this is how I did it:
Start with some materials:
Thread some beads onto a headpin.
Bend the pin as close as possible to the last bead so the pin is at a 90 degree angle.
Cut off the access leaving about 1/4 of an inch. I just eyeballed it.
Using round nose pliers, bend the pin back towards itself to make a loop.
Now add the jump ring and the clasp.
Another variation would be to have the beads on separate headpins or eyepins so the piece will be more dangly. You can go as long or short as you'd like. There are so many possibilities.