▸ Offer riches at a price
Present something valuable to the PCs be it actual treasure, information, a needed supply, etc.—but also present a danger that makes it costly or difficult to get. See if they think it's worth it.
"There's this beautiful wooden chest up against the wall, covered in soil and dirt but still intact, about yea wide. And there's a dead crinwin in front of it, clutching a withered, blackened arm."
"Yeah, Vahid, these are Tempest Lord runes. Not only that, this is some sort of formula or spell, related to… thunder? But you can't tell more than that without digging it up, which will take time and make noise. You'll risk a run-in with that beast whose scat Caradoc found earlier. What do you do?"