I found brass wire at an arts and crafts store slash hobby shop.

Don't forget the wire found in vehicles and aircraft as well as the windings in small motors, etc.

I remember reading about a plane that went down. Happily the survivors were rescued some time later. They were asked why they didn't snare the rabbits that were seen hopping around. They said they didn't have any wire. It was pointed out to them that there was a LOT of wire in the downed plane. They never thought of this.
Think outside the box!