Hmm, a raccoon tail on the antenna might fit the bill. I saw a hula dog at Canadian Tire - it was kinda cool.
Congrats! I have an '05 Toyota Corolla too. Good cars, reliable and good on gas. Steering wheel covers are good for looks and comfort. Tinted windows are nice for privacy. An upgraded head unit (stereo) will make the stock speakers sound better and replacing the stock speakers with aftermarket ones will make it sound even better than that.
Mrs. R’s Suzuki Aerio SX, a cute (?) little yellow hatchback, has vinyl flames on it. They are “Tribal”, bought from fastflames.com. We’re very satisfied.
How about your last name, in a white Olde English font, in an arc across the rear window?
That’s kind of funny, as my maiden name actually was an Olde English name. My married name is Irish - I’d have to go for a Celtic font.
Heh, I just noticed you’re from Calgary, so you may not get the cultural reference. Down here, it’s not uncommon to see this on the rear windows of cars driven by hispanic folks, occasionally accompanied by a decal of Our Lady of Guadalupe or a less-than-flattering airbush art endeavor. If you wanted to do it, you could “Mexicanize” your name (perhaps “latinify” would be more PC…whatever); maybe “featherlouez”! 
Hey, I like that! “featherlouez” or maybe “featherluis”