Consider hair jewels.
|I called this style "Medusa Goes to the Opera."|
As you might have realized, ballroom dancers are not shy about putting all sorts of products in their hair. I've seen and heard of white glue and glitter glue, as in those from the school supply section of the average store, being used in hairstyles. As long as it's water-soluble and safe for skin contact, it's an option.