Been doing a lot of that in recent months on the Celica. Seized then sheared caliper slider pin, Sheared off two bolts on exhaust manifold heat shield, had a seized ABS sensor , various fasteners on the plastic undertray all sheared off.
All of then drilled out and, where needed, re-tapped. and new fasteners fitted.
The ABS sensor was a nightmare, plastic, steel, magnets, copper wire and making sure you don't drill too far and catch the trigger ring.
Seems that most of the smaller fasteners on Toyotas are made of Crapalunium or Shitanium. But I suppose it is better than being made out of Unobtanium.