From chapter 94 :
Slowly the boy sat up in bed, his hands momentarily fiddling beneath the covers.
I assume that he swapped the Hermione-toering with the portkey-toering at this point, leaving the Hermione-toering beneath the covers, or making it drop into the moleskin pouch, or something like that.
I remember that part too. I had thought that they had searched all of Harry's things. Upon re-reading the relevant part of Chapter 94, I now realise that they only searched his trunk and mokeskin pouch. If he left it in his bed it would have escaped detection.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 114, and also, as a special case due to the exceptionally close posting times, chapter 115.
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)