I used to make them to match DD's outfits when she was young. I used any and everything. Ribbons, tulle, shoe strings, beads anything that would match her clothes.
I have made them with balloons tied in and also glued on any small toy or ornaments I could find. also feathers - Also used jewel fabric glue to add rhinestones in various shapes and colors. If you buy 100% polyester ribbons, these can be spireled around metal knitting needles and heat set in the oven for curly bows.
I have been surfing the internet for about an hour looking for some hair bow ideas and "free" instructions, I didn't realize they were so hard to find !! I did find this page for Hobby Lobby though and it might be helpful.
hmmm the first link didn't work for me when I just tested it. If you go to hobbylobby.com though and click on crafting ideas, just enter hair into the project key word and it will bring up a page that has some projects on it