The Gravitation Beam Emitter (that pistol-looking thing) that Killy uses in Blame! [https://www.youtube.com/watch?v=MDA1bUkotIk] for sure.
And there's Anglachel [http://lotr.wikia.com/wiki/Anglachel], solely for its history, from Beleg to Turin, in Glaurung, and then through Turin himself...