Assuming there are people in town prepared to pay then cantrips can provide easy cash, albeit in small amounts.
Mending is ideal. though you'll be unlikly to be able to charge 5pg a go (price per casting as per PHB) unless you can find objects that weight less than 1lb that are expensive, unless they have sentimental or artistic value - broken vases, torn paintings or masterworked items. If you cleric has 2nd level spells then Make Whole can repair much larger objects, like looms, tapestries, farm equipment, a cog in a mill, at up to 60gp a time.
Clerics could also perform augury's for locals who can afford the service, though it costs an extra 25gp for the material component which makes it 85gp a time, and only helps for something that will happen in the next 1/2 hour, a marrige proposal is the only thing that springs to mind.
Continual Flames can be sold for a decent profit, and if nothing else you might be able to runa few childrens parties using prestidigitation
And of course anyone who can afford these services gets marked by the rogue.