Tape recordings can summon evil spirits. Evil spirits make sounds vaguely akin to a distorted motorcycle engine. Cutting off your possessed hand with a chainsaw is pretty messy. Plus then it's free to wander around, drop it in a garbage disposal or something. Duck tape is underutilized for first aid.
Demonic hands have to look out for rat traps.
The human body contains about twelve gallons of blood. Cheap jewelery repels demons. Oh sure, something drags your girlfriend out a window and you go looking for her without a weapon. 9 mins-Ash has got to have some serious prune toes. 19 mins-Ash, that decapitated head has teeth, it's going to bite you.