Feeling rather pleased with myself for repairing my parents' hob ignitor after it was submerged (still powered) in water for several hours following a plumbing leak. It's one of these:
Fortunately, the EHT part is all potted and survived, but the mains driver circuit had arced across in several places and blown a couple of components.
Had to cut away some carbonised PCB and clean off muck resulting from being powered under water. Had to guess value of a replacement resistor, and replace a diode. It's now working again on the bench.
It's just waiting for me to have my bowl of Shreddies in the morning so I can cut a square of plastic from the side of the emptied plastic milk carton, to put under the circuit board and insulate it from the carbonised plastic case (no EHT there). (Thermosetting plastic would be better, but I can't think of any around the house which I could use.)