Shining Stars - simple tape design tree, with star garland. Washi tape would work well for this, as it wouldn't mar the wall paint. I just picked up some wide white washi tape, with "Merry Christmas" printed on it.
I love the idea of advent candles-I for each week of December. At the beginning of each week the family gathers to light the correct number of candles and sing carols. This is a lovely idea! I like the look of the flocked pinecones in the star.