Choose colors appropriate for the occasion, such as bright primary colors for a young child, pink and blue for a baby shower, gold or silver for an anniversary, black and orange for Halloween, red and white for Valentine’s Day, green and white for St. Patrick’s day or red and green for Christmas.
Use a Styrofoam ball appropriate for the size of your container. As a general rule, a ball the size of a tennis ball or baseball works well for most arrangements. You can also wrap the Styrofoam ball with green tape or paint it green, for an added effect.