Put on safety glasses and gloves.
Flip each of the three metal buckets over to expose the bottom. Mark an 'X" with a pencil approximately 2 inches in from the edge on one side of the bottom.
Take your screwdriver and place the tip of it on the mark. Using the hammer, tap on the other end of the screwdriver until you puncture a small hole in the bottom with of each of the buckets.
Enlarge the holes to the diameter of the pipe by using the screwdriver as a ream.
Measure the height of each bucket and add these measurements together.
Add 3 inches to the combined measurement of the buckets to determine height of finished planter. Your pipe length should be at least 18 inches longer then the calculated height of the finished planter.
Take your length of pipe and place one end on the ground in your garden where you would like your planter to stand.
Begin hammering the other end driving the pipe down into the soil until the length of pipe above ground is equal to the measurement of the height of the finished planter you calculated earlier.
Slide each bucket one by one over the pipe through the holes you made. The buckets will sit one on top of each other and have a slight forward slant as the inside of the bucket braces against the pipe.
Adjust the position of the buckets so that they are not directly over each other.
Take a small amount of waterproof glue and apply to the top of the pipe.
Place the Christmas ornament upside down so the hanging stem goes into the pipe. Press the ball down firmly to seal the opening on the pipe. Let dry.
Fill the buckets with potting soil and plants.