My go to photo of myself for whenever I have to submit one for something (scholarship recipient columns, profile pictures, applications, etc) is one that was taken semi-professionally of me kneeling next to a small snail statue in a park. I've been told on many occasions (including by one adcom member) that it's a great picture because it looks nice, the colors are bright, and I look cheerful. I've been told that it is eye catching and memorable (in a good way) which works in my favor. I think there can be a subtle difference between a photo that doesn't hurt you and a photo that draws the eye.