I found these black leather chaps at a resale shop. They are a women's size 4, which means they can be adjusted to fit Blaze around the waist, but they were too long.
I cut them down to the right length and ended up with two wide strips of leather with snaps attached.
I cut one of these left-over strips in half length-wise and then made it less wide, so that I could make a bullet/vial armband. The strip of leather that is holding the vials in place was left-over from an old leather miniskirt (the one used to make the pilot's cap).
The silver studs are metal scrapbooking stickers that I just glued in place with Super Glue.