You plug this solid-state inverter into your car’s lighter socket and power whatever 110 volt AC appliance you want, 75 watts max. No need for special DC gadgets. It’s made for recharging cell phones and other batteries, but I’ve used it for my scanner and my printer while on the road. Also, I’ve run a small B&W TV set (5’5), and more important, my baby’s bottle heater (I admit is a small one). You can power almost anything that doesn’t use large resistance like hair dryers, waffle makers, bread toasters, small ovens. I haven’t tried a coffee maker yet.
The same company offers an assorted line of automobile inverters with more output power (200 watts on up). This is the smallest one.