Go all the way down to Leyawin and look for Rosita's house. In her house you'll find 4 everscamps that couldn't care less about you. kill them and wait a few seconds and (poof!) there they are again. Work up your mystysism by casting detect minor life.

Sneak: Turn on sneak and be behind the everscamps when you kill them.

Conjuration: Cast any soul- trap on them but be warned! they will attack! (not like they're very strong though)

note: this cheat will not be available if you've done the misc. quest "Whom gods annoy"