You'll always be able to improvise a centerpiece with these candle blocks: Each face is drilled with a hole sized to fit a particular type of candle.
Candle Blocks How-To
1. Start with a single 4-by-4-inch cedar post from a lumberyard or home center; cut it into 4-inch cubes. With an electric drill, make holes in the center of each side. Use a drill guide to bore a perpendicular hole, which will enable candles to stand straight and burn evenly. Bit sizes shown are gauged to standard candle thicknesses. Top to bottom: 7/8-inch bit for a hand-dipped taper; 9/32-inch for a stick taper; 1 1/8- to 1 1/2-inch Forstner bit for tealights and large tapers (sizes vary slightly); 3/4-inch spade bit for a Shabbat candle; 15/32-inch bit for a Christmas-tree candle.
2. Sand the rough edges with fine sandpaper; paint, stain, or seal wood with tung oil.