A tub of water and an aquarium heater. Your local pet store or Walmart. Just checked Walmart.com. There are many choices from $26 - $47.
Experiment with water first to dial in the proper temperature.
NordeastBrewer77 said:exactly. check this out. it should help ya on your way.
Be careful in selecting a heater. The one I started with had its lowest setpoint too high. Be sure the heater will work to maintain temps within the range of your yeast.
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