@Ulfra_Wolfe@witches.town I had one of those at a place I lived--the house-owners put up a mezuzah, and at least twice I saw evangelists come up, get close enough to see it on the doorframe, confer with each other, turn around and leave. unfortunately I haven't been able to find out if it's--deeply disrespectful/offensive to get a pretty one (you can buy them online) and mount it without the prayers, or, y'know, being Jewish.
@Ulfra_Wolfe@witches.town on the other hand, maybe mounting a nice amulet with a pentagram or some such on your doorframe would have a similar effect... ;)