Probably one of the simple-looking ones (like a tin barrel with arms and legs)
But about campaigns again...
There are a lot of interesting mini-campaigns in the Forgotten Realms. Besides the well-known Kara-Tur (and Horde), Maztica, and Al-Qadim campaigns (the last has quite a lot of material on its own), some lesser ones include Old Empires (Egyptian/Middle East), Great Glacier (Inuit/arctic), and Chult (African/jungle). Anauroch (Bedine/desert), Calimshan (another Arabian-esque locale), and other places also make interesting campaigns on their own as well. Some interesting material in all (interesting priesthoods, arctic dwarves and jungle dwarves, weapons/armor, etc.).