Madge, the Mayor's daughter gives the pin to Katniss after the reaping. In the movie, Katniss says I got this for you today and hands her the pin, then proceeds to say as long as you wear it nothing bad will happen as prim is scared for the reaping.here, she begged Katniss to take it  as her token, as every tribute can bring a token to remind them of  their district.    In the movie however, an old woman (speculated to be Greasy Sae  from the books), gives it to her for free after Katniss asks how  much it is. This takes place at the Hob.