Loved the ending. As for your ideas, I'd definitely want to see something in the same vein as Nerty's watch. I alsp wouldn't mind seeing that Tooth Fairy idea used. I also vote for anything involvinh nipple play like JIP suggested.

Maybe something you could do with Alex's now emptied skull is have Bolt pull Alex's consciousness out and place it in Fey or somethonh else small so that she can explore her own body.