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.
Etymologically, the origins of the name Ikebana comes from two Japanese words: ikeru, which means to give or conserve life, and hana, which translates as flower. There is an old Japanese saying relating to Japanese flower arrangement that goes kokoro wo ikeru, which literally means to give life to your heart. In all cultures, nature has always been an essential source for healing of the soul. In Japan, the use of flowers to enrich the spirit has been part of the culture since ancient times. By extension, Ikebana is also considered a form of artistic expression meant to enrich and heal the spirit.