The Five Senses
This adventure has the group wandering into "Bally Forge". As they near the town, they begin seeing reward posters every ten feet - on trees, houses, rocks, horses, anything. Make a suitable poster up to hand to the group; basically it says "REWARD, 1000GP for treasure hunters, see DIANE at the Puffin Muffin".
They find the Puffin Muffin and find Diane as a middle-aged woman whose husband, the local madman "Crazy Chuck", has just died. He left her a huge solid iron treasure chest, but had the key hidden in a cave complex he designed to "keep out the evil Green Dragons" who he thought were after him. She wants the adventurers to retrieve the key for her.
If your party's weak, you can have her supply her henchman, "Walter the Wrestler", who is very vain and feels everybody adores him:
Walter has a mace, leather armour, high leather boots belt with belt pouch (tinder, flint, 3 candles) leather headband on forehead, leather bracers on wrists
The caves are two days out of town; terrain and encounters are up to you.
Five Senses Index
Lisa's D&D master Listing