Interesting story, from CNN:

After the fire, all that was left of Jonathan Reyes' massive Hot Wheels collection was a piece of metal that once was part of a toy car.

But on Wednesday, the arrival of two cardboard boxes at his grandparents' house sent 7-year-old Jonathan flying to the door, said his mother, Jan Reyes.

Mattel, the company that makes Hot Wheels, sent racetracks, play sets, stickers, folders, T-shirts, hats and hundreds of toy cars.
Kudos to Mattel for doing that.

Full story:

Support and Hot Wheels after fire - CNN.com