Isaac couldn’t stomach the $1.25 price tag of his daily ginger beer habit so he decided to make his own home carbonation system from a few old soda bottles, a snap-in valve stem, and a CO2 pump. If you’re picky about the quality of carbonation, this method “produces bubbles of a very fine character,” according to Isaac. Of course, you don’t have to stick with just ginger beer; any kind of soda flavor you’ve ever imagined is now possible. I think I’ll try to make my own mint-infused watermelon soda. Sounds good, doesn’t it? If you’d prefer to stick to the tried and true, Isaac included his own ginger beer recipe, which nicely rounds out this great DIY write up.