A doctor in Australia drilled into a boy's skull with a power drill, draining it of blood clots that would otherwise have killed him. From the BBC:
Dr Rob Carson performed the procedure on Nicholas Rossi, 13, after the boy fell off his bike and hit his head. The doctor had never attempted the surgery before, and had to be talked through the operation by a Melbourne neurosurgeon. ... The small hospital had no special tools, so the team had to use a household drill.
I wonder what model it was.