So my LHBS posted something about a growler saver a while ago on their facebook. I took a look at it and it seems pretty damn cool. Basically it's a special cap you can put on your growler that will keep the beer carbonated (or recarbonate it if needed).
Seems like a cool idea and it's being made by some guy in my area...i might have to pick one of these bad boys up.
https://www.kickstar...s-as-good-as-th