If you haven’t yet tried the new Coca-Cola Zero Sugar, here’s your chance – while (safely) catching a glimpse of tomorrow’s total solar eclipse in North America.

Coca-Cola today posted a social media video with step-by-step instructions on how to make a DIY solar eclipse viewer using only an empty cardboard 12-pack of Coca-Cola Zero Sugar, scissors, tape, aluminum foil and a safety pin.

Watch the short how-to video here:

Sprite is getting in on the action, too, with an (extremely) limited-edition #EclipseMix on the Coca-Cola Freestyle fountain dispenser. #EclipseMix – a tasty mashup of Sprite Vanilla, Sprite Raspberry and Sprite Grape – will be available for download on the Coca-Cola Freestyle mobile app only between noon and 3:59 p.m. ET as the eclipse travels across the U.S.