What you need:
Spray Paint (optional)
Bolt and Nuts
Step 1: Find a Board big enough to sit all your buckets on. I had 6 buckets but you can do less or more.
Step 2: Paint the board whatever color you want (I used spray paint)
Step 3: Place buckets on board and trace around them
Step 4: Drill holes in center of circles that you drew on board
Step 5: Drill holes in bottom of buckets. I learned the hard way that you should stack all the buckets together before drilling through the bottom. That way they will not split.
Step 6: Place the bolt on the bottom of the board and then place the bucket on top of it. Then thread on the nut inside the bucket.
Step 5: Look how pretty your work is so far. You could be done right now or you could kick it up a notch as Emeril might say.