People generally don't make Magickal weopans, but we do make Magickal tools. For example; an Athame or Sword are used strictly as Magickal tools and can be considered uneffective if blood have gotten on them.
But if you're looking for a tool that doesn't need to follow traditional rules...well, I would suggest using a scepter. It may have rules to use it, but they aren't traditional and many do not use them. In fact, there isn't much knowledge on scepters, so I would suggest researching them (as I am).