You could create an arrangement for any size vase, the larger the vase, the more flowers and greens to use. For Christmas time, use red, white and maybe even green flowers (like green button mums). Also choose from a variety of greens and evergreens out there. Accent a red rose in a bud vase with some baby's breath and cedar. Deep red alstroemeria are especially beautiful. There are many other flowers that would be perfect to use for Christmas arrangements, the link below will take you to a complete list of flowers, foliage, and evergreens for Christmas floral design.
Seasonal Statements _ Summer looks bright, with flashy colors, especially greens, oranges and yellows, dominating the scene. Gerber daisies, sunflowers, lilies and a spectacular array of colored roses are the mainstay. Designs are casual, contemporary, dramatic, or even outrageous. Blazing tropicals are growing in popularity, too.