We have seen a bunch of awesome carbonated drink makers here in the past. The BubbleCap is probably the most compact one yet. It allows you to make your drink fizzy in any soft drink bottle. The device works on a variety of drinks. Simply attach it to a PET bottle to get started.
You are going to need a BubbleCap , CO2 cartridge, handle, and adapter to get started. This makes you fizzy drinks and saves the environment from more plastic bottles.