I have a theory: Crutches are the fusion of the waif and riot grrrl phenomena. They are waif in that they say "I am so weak, I can no longer stand on my own." At the same time their riot grrrl side says "I am so tough, I am now injured." A very good combination indeed.
Terri's pink cord jumper from X-Girl and barrettes by Goodie. The real story here are the sneakers (you'll see them in the movie). They're converted from Nash Cruiser sneaker skates, just unscrew the roller portion, and you've got instant sneaker. Check your local thrift shop for those skates.
Use Tootie. Use Natalie. Use Jo. Use Edna.