New method:- Scrounge the graveyard and spook the neighbourhood with, "Link back to grandpa-dont-come-back(dot)com if you don't want your grandpa to return as a zombie and annul that will of his".
It can also work with different niches. Like Baking, "Next delivery send a note to your customers asking them to buy a pair of used panties from beach-panty-raid(dot)com, else next time you will open your oven to find a severed head inside".
That's it! Now go make dough!!!