Here is my Rubies Deluxe V Mask, You can usually pick them up fairly cheap from eBay etc.

Remember, remember, the 5th of November! But if you can't wait that long, then this deluxe V For Vendetta Guy Fawkes Mask is just what you're looking for this Halloween season!
This rebellious rig features the familiar, white face mask modeled after Guy Fawkes with a thin moustache and soul patch to bring out the revolutionary radical in you this Halloween! All the masses will gather in unison when they see you in this anarchist accessory!

With this deluxe V For Vendetta Guy Fawkes Mask, you'll have all you need to celebrate your own Guy Fawkes Night this Halloween season!