Candles in glass boxes - perfect combination of cozy and contemporary. Using flameless/electric candles for this would be a good idea to not have to worry about melting wax oozing into the bottom of the glass box and onto the other decorative objects
Create a simple spring mantel display by placing plant sprigs in pretty vases and bottles. Various glass bottles with one sprig of greenery or tiny flowers. especially bleeding hearts and lily's of the valley in early spring.