Halloween costume?

My parents are being jerks, so they wont buy me a halloween costume. Im soposed to make my own. Ihave no idea what to to. I have blonde hair if that helps . LIke this color:
Its being gay so go to google if you want to see go on images, type in ...

hair dye colors and its the one at the bottom the one with the brush going through it.

** Its my natural hair.

I want to be somthing that acctually looks like a costume. Not like I stitched somthing together . Please help.

be a guy and wear sweats and put urhair in a hat, be singer and get dressed up and make a microphone out of a tolite paper role, be a nudist and wear nuthin (jokes), be a goth and wear black and wear dark makeup