[Patch]

Try wiping off the switch face with alcohol. Then take something like a twig or toothpick (pencil would prolly be too big) and glue it to the switch plate with liquid electrical tape or rubber cement. Tape or rig it so it can dry attached. Then see if you can pull it out.

Glue gun might work. Superglue would get the best traction, but the risk of gluing the switch in place would be too high - and it's not easily cleanable.