The only things you need to make a dreamcatcher are a hoop of some kind, and string/thread/wool.
The hoop could either be the inside of an embroidery hoop, a metal or wire hoop or a hoop you have made from cardboard. You can decorate this hoop by painting it, wrapping it in strips of fabric or you could just leave it plain.
Follow this video to learn how to create the woven pattern:
You can decorate your dream catcher using beads, feathers or anything else you have. Use the image below for inspiration: