A simple hairstick: print the stick, the connector piece, and the top piece. Push all 3 pieces together, glue if necessary. If you make sure your slicer creates long tool paths on the stick part, the hair stick is quite smooth and not "ouchy" when inserted. You can put any topper on it you desire - just put a cylindrical hole in the bottom of your object that measures 5mm diameter by 10mm tall.
Make it have lots of shells -- that will force it to print lengthwise, creating a smooth hair stick that doesn't hurt when inserted.