Here is another coffeemaker that lets you enjoy your own Nitro brew coffee at home. The SHAHRIA 64oz Nitro Cold Brew Coffee Maker is pretty easy to use. Simply fill the keg with cold brew coffee, use a Nitro charger capsule, and you are ready to go.
The keg has a food grade stainless steel construction. You also get a detachable regulator and handle. Simply bring your own N2O cartridge.