Barter

Barter is a system of exchange where goods or services are directly exchanged for other goods or services without using a medium of exchange, such as money.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, the Smurfs use barter with other sentient races in exchange for certain goods that they would need from those races, although for the most part the Smurfs are usually self-sustaining, getting much of what they need from the forest itself.