I grew up on a dairy farm and when my dad cleaned out the last of the shed after he sold the farm, I let a lot of great T2T stuff go because I hadn't yet thought of all of the great uses for it. But a while back, I was at a garage sale and saw this calf pail for $1 and snatched it up.
There's a hole down on the bottom where the bottle nipple would attach. This is perfect for giving flowers good drainage. I put a rock loosely over the hole before filling the pail with dirt just to be sure all the soil didn't drain out too. This still allows the extra water to trickle out.