Water: Without water life cannot exist so it is no suprise that depictions of streams, rivers, lakes and oceans appear in folk art paintings, ornaments, pottery, etc.
In folk art and traditional Ukraine Pysanky egg decorating, water is usually represented symbolically with parallel wavy lines or strokes.
Fish: Most cultures historically have depended upon fish and shellfish for food. The pursuit of fishing appears in many folk tales as well as in folk art.
Contrary to popular belief, the fish symbol is not exclusively a Christian symbol, the fish motif has been depicted in peasant art since the caveman days and continues to be a popular design to this day.