Being wrote off an entire 787 Dreamliner and donated it to the Pima Air And Space museum. It was going to cost to much to fix and have recertified after it went through testing, so they gave the whole thing away.

Possibly the second largest donated item ever, after the aircraft carrier Russia "donated" to India (I think it was in need of $2B worth of repairs...)

The family that started the Patagonia brand donated 1600 mi^2 of land to Chile to form a national park. That's way bigger than a boat(and probably cheaper to maintain too)!

The first 3 flight test aircraft were donated:

ZA001 Went to Nagoya, Japan.

ZA002 Went to Pima Air and Space Museum (as you noted).

ZA003 Went to the Museum of Flight in Seattle.

As for the other three:

ZA004 may still be with Boeing.

ZA005 was scrapped.

ZA006 appears to have been sold to Mexico for a VIP transport.

If you try to return a mattress you bought online this happens too. They'll have a truck from the Salvation Army stop by. Small write off I suppose. I "returned" an Amazon mattress but my wife didn't like it, and because of COVID they just refunded the money and told me I could keep it. I don't know what I'm gonna do with this extra king sized mattress though, guess I'll make a rather luxurious guest bedroom.