FYI, There are many tutorials online for the Katniss Everdeen signature braid. I have long hair and my fave long hair tutor is Torrin Page. She is chatty, happy and very good at explaining EVERY STEP. She has a nice tutorial on allk basic braiding styles and then when you need to, you can go back to those if you want mixed styles such as Dorothy's french roll into braids and then the ends curled. Torrin even went as Dorothy one year for Halloween. Here's her Katniss braid tutorial: https://www.youtube.com/watch?v=ToiAf4pSj5U
She has other Katniss hairstyles as well.

I found a really cute dinosaur costume for my son to wear this year. He had a dino themed birthday party that he wore it to first, then a preschool class Halloween party, and finally trick-or-treating. The best part was it was only $2!

I have done the thrift shop costumes for over 20 years now. I bought items not only for Halloween costumes, but for costumes in class plays. Plus the schools appreciate it when you donate the costumes for future plays. I remember purchasing an old wedding dress when my daughter wanted to be Cinderella from the movie "Ever After". The material I cut off was used for other items. The excess lace was used for her wings and Halloween bag. The rest was gathered and saved for other projects.