GOOLOO 300PSI Tire Inflator, $16 with code UG4JAQAG

Forget trying to find quarters under your car seat and paying way too much for 3 minutes of air, and get this $16 tire inflator with code UG4JAQAG. You can fill up your tires whenever and wherever you please for free. Keeping your tires properly inflated helps improve gas mileage so this guy will basically pay for itself. It would also be great for bike tires.