Using a Jiffy bag or Mailing Envelope, some duct tape, and some wire you can make this awesome flash bender to mould and direct your light when taking photos. Rogue
make this awesome Flash Benders
, that give you great control over your flash photography light, you can use them independently, or combined with an umbrella.
I actually have one on order, but that didn't stop me having a go at making one myself when playing around with a Jiffy bag. Plus you can use the bubble wrap of the jiffy bag to give it a softbox mode too.
Watch this video to see how it works.