To make bows for a Christmas tree out of ribbon, you will need some supplies. You will need ribbon (preferably 1/4 inch wide), scissors, a hot glue gun, and a ruler. First, you need to cut the ribbon into strips that are 8 inches long. Then, you fold the ribbon in half and create a loop with it. Next, you take another strip of ribbon and place it over the top of the loop. Finally, you secure the ribbon with hot glue, and the bow is finished!