You can buy nice-looking but cheap galvanized washtubs on Amazon, however I got this one out of an old house near my place that was being demolished. (I was in HEAVEN just wandering around it picking cool stuff up – I got an amazing birdcage too!)
This old washtub is in really great condition, and I’d been using it as a planter for a couple of years, and feeling bad that I was essentially destroying it. (Having all that wet dirt in it year-round is really hard the metal, rusting out the bottom!