This is my "brew system line flusher". After a brew day, I backflush all the lines with water until they run clear, and then hook this up. The white end goes to the outlet of my brew system and the metal end goes to a gas QD. Then I just turn on the CO2 and blow all the liquid out of my lines. This not only gets the liquid out, but fills the lines with CO2 to discourage bacteria...
Not really a "gadget" per se, but a drywall mud mixer makes a hell of a mash paddle. Ain't no clumps once I'm finished....
