There’s a joke in the show Chuck that one of the characters was a member of EW&F, but at that time they were called ‘Earth, Wind, Fire, and Rain’, and he was Rain

You could try using a thin sharp object, like a sewing needle, and heating it up with a lighter, and then stabbing it into the broken off pieces. Once it’s had a few minutes to cool off, hopefully the melted plastic sticks to the needle and you can pull it out.