Where does Katniss get her bow and arrow?

In her first Hunger Games, she stole the bow and arrows from Glimmer, the District 1 career girl.

In her second Hunger Games, she ripped out two bows and two sheaths of arrows out of the Cornucopia.

In Mockingjay, she gets a cool new high-tec arrow designed by Beetee that recognizes only her voice and goes "to sleep" when Katniss says, "Goodnight.'