Any of the above would work. And it doesn’t matter that it is not ancient, it just doesn’t work for anything other than an 80s nostalgia trip (which im all for, except for an actual important plot point). The convenience of standing in the correct position is one issue, as well as the why? Why would a Palpatine ally (or anyone else) put a wayfinder in a fallen wreckage, create a dagger to match up with the wreckage and hide the dagger. The why for something like this is important, otherwise it is just terrible lazy writing (which of course…).
I could get on board with sith sorcery allowing the dagger to shape this way…but it’s a leap…