Pinocchio became human didn't he?(I got that line from somewhere...but I can't remember where) As for Marisa's case...I think it's best to ask the Elric brothers on how to become a normally inanimate object.
I feel a little bit yandere here~~ but still very cute. I thought there would be more like switching their soul or something but it just end like that... .Also , I ship Alice x Shanghai very very much.