While gas prices have dropped from their insane highs of last year, it still isn’t cheap to drive away with a full tank these days, which is why every little bit counts. Unfortunately, you’ll do much better at saving notes rather than coins as with the Petrol Gauge Coin Bank. Each coin dropped inside will see the needle move closer to the full section of the gauge. We wonder whether future iterations of this product, if any, will be dynamically adjusted according to fluctuating gas prices in the market. This nifty little coin box costs £15.00 to bring home.