Restoring 1966 Vespa 150 Super - need help to id a few parts

Hi not sure if anybody can help, I am soon to finish the restoration of my vespa and seem to have a couple parts left over that I can't identify, I think they may be important!

Any help appreciated. Feel free to have a laugh at my ineptitude. :-)

the small piece fit on your brake shoe

the two of metal strips seat perhaps ? i'm not sure