I saw two similarly industrial-strength home drinking solutions today. The first is a carbonation system that uses a 20lb CO2 tank and makes enough seltzer for a year. The experimenter wanted to avoid using proprietary Soda Club CO2 tanks so he/she developed this system that only took ten minutes to put together after buying a ton of big parts on eBay. Clever, but kinda ugly.
Not so ugly, but much bigger is a self-contained brewery that cost a mere $4,315 to build. Damn!