In New England, we only use ceiling fans on really bad days, which aren't that often. Even then, they aren't very useful.
A good fan in the window or on you is much better, but I wouldn't let Tika out with those on either. I'm afraid she'll somehow slip her leg in too close to the blades, even though they have a good deal of space between the grate and the blades. I certainty wouldn't let her out with the ceiling fan on, clipped or not, but maybe I've just never experienced a "good" enough clip.
(courtesy of Office Depot)
Maybe something like this would be safe? That's what my fiance's family uses in Virginia. They are a family of walking space heaters so they have these things on them almost all the time in the summer. I am not usually so hot so when I move down I was going to go without a fan for Tika's sake.
My roommate I have now is the one who turns on the fans, and we always triple check to make sure the bird is not currently out and that everyone knows not to take the bird out if the fan is on in any room (unless I have her sealed in my bedroom for play).
Edit: Ceiling fans were a problem with my budgie when I was younger when they were off. They were a hazard for us kids because he would fly onto the "perch" that holds the blades on and move to the next perch when we spun the fan toward us to try to get him off. We'd do this standing on a chair beside the dining room table, sometimes forgetting to lift the cushion that could have easily slipped.
Fortunately Tika is a little scared of heights and hasn't decided to use curtain rods or fans as perches.