Well, sweetie, when a man or a woman wants to armor very much, they go to a home improvement store–like Home Depot or Lowes–to buy rolls of aluminum flashing. You find these in the roof section of the store, because this is what is rolled out over a roof and hammered down over peaks and such.
Rolls of aluminum flashing can be small, or very very big! They can range from a roll 5 inches wide to 10 feet long (around $5.98), all the way up to 20 inches wide and 50 feet long (around $39.00)!
While most aluminum flashing is “silver” in color, some rolls also come with a thin coating of “gold” on the back, which you can see if you tip the roll up to look at it under the light. However, even though you can buff out the silver side of the flashing if you make marks on it, the gold side is very temperamental and is more prone to being able to see scratches, since it is so thin.
So long as you are working on the silver colored side of the metal, a permanent marker or wet erase marker work great for making marks for cutting and metal working, as these can easily be buffed or washed off. Typical store-bought aluminum flashing is also thin, so it can be cut with something as simple as a strong pair of scissors (obviously, use an old pair you don’t care about!). This is good for creating intricate cuts and is less bulky than using tin snips.
Remember though: Aluminum flashing can be temperamental, or even dangerous! If you bend it too much or dent it, it can snap or be very difficult to hammer out. Also, some cuts can make the aluminum very sharp–such as outside corners. It is generally a good idea to file off the sharp corners of your project after you create a piece, and to create smooth, consistent cuts with your scissors to avoid metal splinters. A Brillo pad and water is also very good at not only softening edges, but also getting rid of cutting marks (as Brillo and steel wool are really some of the few things that can take Sharpie marks off your project).