It never occurred to me to look in Mr. Herriman's office for the celery. I had looked EVERYWHERE in the house, even though I knew that it wasn't going to be in some rooms/floors, because those sections were not unlocked when that adventure was first active. I finally found it there, on the second time looking in there.
The other one that was hard was Wilt's scissors. I've seen a lot of people have trouble with that. I can't remember, now, where I eventually found them, but I had to help my daughter with it when she came across it. It took us forever, and we couldn't stop that 'favor' and do another one with Wilt. He would only ask for his scissors. Next time, I'll just move on to another friend and ask them.
~Vicks