In Greek mythology, Amalthea brought Zeus up on the milk of a goat. In return Zeus gave her the horn of the goat. It had the power to give to the person in possession of it whatever he or she wished for. This gave rise to the legend of the cornucopia. The original depictions were of the goat's horn filled with fruits and flowers: deities, especially Fortuna, would be depicted with the horn of plenty. More modern images, such as those used in Thanksgiving murals, depict a horn shaped wicker basket filled with fruits and vegetables.
The Cornucopia is also a favourite design for Corn dolly making.
The sampo of Finnish mythology is also a source of plenty.