Conventionally a person gets a job, fulfils a task and then receives some money. Money is collected and used to spend on things. Boiled down this is the consumerist lifestyle.
Help the Neighbour
If a person goes to a neighbour and does some work to fix their car, but refuses to accept a pre specified amount of money then the person whose car has been fixed can choose to pay back the other person later with a comparable task, show gratitude, do nothing, offer their skills for free to someone else etc.