So many beautiful creations from the community, this thread is going to be amazing by the time we’re done! I suppose I’ll throw my name in the hat…
I think I’m going to have to say my personal favorite (of the gifts I’ve made for someone else, that is) is my Star Trek “chest” with magnetic isolinear chip key/lock, partly because of the coloring, but also the mechanics of the internal locking mechanism I designed and it actually worked (push chip in to open, pull chip out to lock it).