Low Hanging Fruit

Low hanging fruit is the expression often applied by marketing professionals for easy sales. Easy wins, gained without a great amount of effort.  In business planning it is a method of prioritizing tasks that may be addressed and solved quickly, to get them out of the way of greater progress to larger, more difficult goals.

Easy pickings is a related agricultural style idiom, as you may imagine.  In this case, easy pickings often refers to duping of innocent people, pick pocketing or a theft that was very easily executed.  I'd prefer to think of easy pickings as a successful yield and harvest in your garden.