I can't make you anything to cut down lost spirits—that would take considerably more time and energy, and I can't guarantee its usefulness. However, there are a variety of other ways to catch flies with honey, if you get my drift.

Constructing a few spiritually-adept jars shouldn't be difficult.

[ if Hiro's going to do this, then Loki's going to help. while he can't be by Hiro's side for it (and he knows it'll just cause a spiral of defiance), he can definitely make himself useful. ]