aronhubbard
Plinker
Electromagnet.
I was thinking one of those rare earth magnets. Keep working with the needle method until you get it pretty exposed and see if you can pull it out. My technique with needles is to get UNDER the splinter, like, really deep to make sure, then lever it out. Hurts, but as Dalton says, "pain don't hurt", and it usually works.
Also, hydrogen peroxide. The bubble action can lift it a bit, too.