Besure to put a mask on the back of your head and wear sunglasses with little rear view mirrors if you do it outside... of course you can always get two of the same mask and wear one on your face and one on the back of your head and wear your clothes backwards... cut some old shoes and glue the front of them to the heels of your real shoes.... of course this might scare someone enough so that you end up talkingto the police, but as far as I know it isn't illegal to look funny and walk backwards.
There used to be a guy in Atlanta that wore a lightning rod on a helmet with it wired to a chain he would drag behind him... of course this was circa 1970/71.
J