I found this hair tutorial on making your hair big and wavy over at Orchid Grey (who I knew I would love as soon as I saw that her tagline is "big hair small wallet"). You can read the instructions on her blog, but basically you blow dry your hair, leaving it a little damp, and twist it into two little buns after putting some sort of holding hair product in it. I left it in for a little longer than she says (about 40 minutes) but I was happy with how it turned out! It made natural waves without having to use my much-abused curling iron.
after: big, wavy, happy hair!