One technique, two looks:  Store-bought white branches or tall sprays of grasses and berries can create an instant simple and modern, or colorful centerpiece for a buffet table or hall entry table. 

Carry through the theme: Fill smaller vases or drinking glasses with the same white branches or sprays of greenery and berries to echo the theme of your large centerpiece.

Light in the window: Use ribbon to hang inexpensive shiny ornaments (to reflect light) or snowflakes at different heights in front of windows.

You might also enjoy:

Spectacular holiday decorations

Holiday ornaments we love

Flameless candles: Beautiful lights for party glow