If you still need some last-minute costume suggestions, our MotoGP Hotties will try to help you.
If you wanna go all out flashy, try experimenting with some wigs. Elvis is alive, baby.

Maybe use that old diving equipment that's been lying around for ages and that's never been used?

Or how about a cheap vampire version?

Or maybe just go as yourself?

Possibly even in the nude, if you're that cheap. ;)

And if everything fails and everyone laughs at you - just make faces.
Our Hotties hope to have helped you out and wish you a Happy Helloween. :D