Another entry for the MOCAthalon, under the category "bookends". This bookshelf has a secret compartment that opens up when a book is removed. Check the video for details.
Had lots of fun working with the mechanics of this, and hope to do some more stuff like it in the future. It was a huge challenge though. Getting the machine to start and stop on its own, by strictly using touch sensors was quite difficult, especially considering I had to try and conceal all of the machinery.
SOLI DEO GLORIA!