I wasn't terribly creative with my costumes as a kid. I loved cats, and I think at least 50% of the time I went as some sort of cat. Starting with one of my earliest costumes, this leopard suit my mom made for me (I believe I'm five or six in this pic):
I went as a black cat a few times, and once I decided to be completely original and was a *white* cat. Heh.
When I was really really little, I was Strawberry Shortcake (that might have been my first). I was a witch at least once. In grade seven I went as a bat, with wings that attached to my wrists so I could flap them (made again by my mom).
My last Halloween (age 12), for reasons I cannot recall, I went as a gypsy (and there's my mom, ever helpful with costuming, putting on my make-up):
Happy Halloween, everyone!