This is my new FAVORITE DECORATION! Just melt any type of chocolate or chips that you want! Chocolate chips are easiest (semi-sweet or dark are good) but you can even use butterscotch, cinnamon, salted caramel, white chocolate or peanut butter chips~ about 1 minute in the microwave. Stir until completed melted; then thinly spread over a big sheet of parchment paper. Roll the parchment up tightly and stick it into the refrigerator.
When you're ready to use it, just unroll. The chocolate will crack into long "bark" slivers that you can just "glue" onto your Yule log with melted chocolate (or adhere before the top of the log hardens).
If you want, you could even sprinkle a little edible gold or silver glitter over the bark.