If the yeast thing freaks you out (no judgment, my germaphobic friend), there’s an even easier trick. Get a soda siphon—a little metal canister that uses CO2 cartridges. They cost about $30, but no electricity needed!
Or, just shake a bottle of flat water really hard and pour it fast. Okay, that doesn’t really work, but the effort counts. Stick with yeast—it’s cheaper and way more fun to explain to your dinner guests.