These are a lot of vintage pinback buttons.  These appear to mostly be 4-H and Jaycees pins.  Largest ones are 2-1/4" in diameter. The gold NSTA would be from the Nebraska State Teachers, the linked chain I believe to be from the Odd Fellows and the two hard plastic stars have no closure, but appear to be earring pendants from WWII era.  Pins are in good to excellent used condition.