I believe both the first and second pieces are parasol handles…check and see if there is a screw hole in one end that would attach to the wood parasol pole. Both pieces need to be tested for ivory as both bone and resin have a similar appearance. With a good jewelers loop, you should see grain lines in both bone and ivory. The geisha does not appear to be ivory, but may be resin. Again, I would take thenm to a professional to be tested. The last piece is Chinese carved jade. It is a crude carving and are not worth much.