#9 Invest in a large propane tank rather than the green one-pound tanks. I resisted this tip for a long time because those small green propane tanks are just so convenient. However, now I’m a believer in using the bigger tanks. They’re a better deal than the one-pound tanks even if you do the Blue Rhino exchange (available at Wal-Mart, Walgreens, supermarkets, hardware stores, and convenience stores). You save even more if you refill the tank at places like U-Haul, Tractor Supply, AmeriGas refill and refueling stations, and RV parks.