@Alyce They can be made with a cardboard loom. Look up “kumihimo bracelet patterns” and watch a video with a bracelet that has 16 strings in it. There are several other patterns online as well. Good luck!
It was really confusing, the strings were the right colors in the right order and I had to put certain strings under other strings to make the knots right and I ended up tangeling them so I tossed it, I’ll possibly try it again tomorrow