My father-in-law retired from the Navy as a Senior Chief, and went to work on the Marine Corps Harrier program, as a tech rep.
Would believe that "Stool" they used was standard issue for every squadron? They often had to make their own, but they all had at least one.
Apparently, the nose gear not coming down was a relatively common situation. Not all that frequent, but often enough that every squadron would have a stool or two around. Good thing, too, obviously!

Naturally, the guy responsible for keeping the stool would inevitably be on leave, so everyone would run around frantically looking for it when it was needed
We had a Harrier in Yuma hover all the way across the field and into Betco Air's hangar. It got into the "death wobble" the A-models were prone to just about 10' off the deck, and the pilot ejected instantly, as he should have. When he did, though, the bird stabilized, and started wandering around the airport, eventually ending up in the hangar. They tried to get somebody up to shut it down, but it always stayed just out of reach. At least no one was hurt...
Still, a nifty video!
Thanks for the post

Pat☺