Reddit mentions of United Solutions TU0014 Nineteen Gallon Blue Rope Handle Tub-19 Gallon/71.9L Rough and Rugged Tub Featuring Rope Handles in Blue

These are the plastic tub I'm considering

[Giant ass tub for laundry] (https://www.amazon.com/United-Solutions-TU0014-Nineteen-Featuring/dp/B005SB1P82/ref=sr_1_4?s=home-garden&ie=UTF8&qid=1504388045&sr=1-4&keywords=laundry+bucket)

you really just need a vessel that can hold your fermentor. Many people use something like these rope bins to put their fermentor into, and then fill around the outside with water.

A tub like this size?

https://www.amazon.com/United-Solutions-TU0014-Nineteen-Featuring/dp/B005SB1P82

I put my fermenting carboy in one of these buckets filled with water. Evaporation keep temps 10 degrees cooler and the extra water mass keeps temps stable. They can be had super cheap at Walmart or local grocery store. Throw in an aquarium heater if you want temp control heatwise.

https://smile.amazon.com/United-Solutions-TU0014-Nineteen-Featuring/dp/B005SB1P82/ref=sr_1_4?ie=UTF8&qid=1524337358&sr=8-4&keywords=keg+bucket

I've successfully used a water bath with my Speidel. I put it in a large plastic tub (similar to this https://smile.amazon.com/United-Solutions-TU0014-Nineteen-Featuring/dp/B005SB1P82/ref=sr_1_2), then filled the tub with water approximately to the same level as the wort inside the fermenter. I placed an aquarium heater (similar to this https://smile.amazon.com/Aquarium-Heater-Submersible-Water-Thermostat/dp/B073P6NW71/ref=sr_1_2_sspa) in the water and set it to the temp I wanted. You may have to fiddle with the temperature to get it where you want, but if you're patient it will work pretty well.