If you have done the last quest in Chapter 8 where you go to Annuminas with the rangers, you can visit the reflecting pool in Tinnudir to do this.
Go right into the instance again and whenever the mobs aggro your ranger friends, go and hit them once, then change to the next mob and hit it once, etc etc. That way when they die you have looting rights. They drop the same items as any high lvl human, but you only need to hit once to collect.
The whole instance takes about 5 minutes to complete. You are only hitting once, so not getting aggro/repair bills, but getting same drops like if you had killed them yourself. Great for slow killing classes like Minstrels.