If you already own a small heater made for 16.4 oz disposable propane fuel cylinders, all you will need to buy is a simple molded plastic cup holder adapter.
These golf cart heater adapters allow out to drop your cylinder down into it then place the adapter into your carts cup holder.
Coleman Style Golf Cart Heater Adapter for Portable Propane Heater That Fits Golf Cart Cup Holder
Fits other 16.4 Oz. portable propane heater models
Universal design fits most cupholders on golf carts, utility vehicles, boats, buggies and more
Extra-thick durable resin construction with vent at bottom of adapter
9.5 inches long, 4 inch upper diameter, 2.75 inch lower diameter