I've done the "She's a Theta!" thing so many times that now my (non-Greek!) friends sometimes even beat me to it for the Thetas we see/hear about a lot (Sheryl Crow, Laura Bush).
Also, I totally started doing the kite/letters/badge doodling thing while I was pledging, and now it's become a habit I just can't stop. That reminds me of a funny story, the first day in one of my classes we did this introductory thing where we had to name a symbol that represented us. A Pi Phi across the room picked an arrow, and so of course I had to choose a kite. But it was a little tricky to come up with some other things that it could represent so I wasn't giving away ritual when I explained how it described me
