I am a huge fan of these little treasures. The flower brooch is made of some kind of plastic mass. It looks pretty old to me, perhaps from the 60s or 70s.
The gold-and-pearl buttons were attached to my mom's old 1980s lace shirt. The shirt itself is ugly and in terrible condition, but I managed to save some bits of the lace too. I haven't decided yet what to do with the buttons (or the lace), but I am sure they will find a new "home".
The fork necklace is from the local flea market.